40th United States Congress

• March 30, 1867: Alaska Purchase
• February 24, 1868: Impeachment of Andrew Johnson
• May 16, 1868: President Johnson acquitted
• May 26, 1868: President Johnson acquitted again
• November 3, 1868: 1868 presidential election: Ulysses S. Grant (R) defeated Horatio Seymour (D)
• December 25, 1868: President Johnson granted unconditional pardons to all Civil War rebels
• January 20, 1869: Elizabeth Cady Stanton was the first woman to testify before Congress

• Three Military Reconstruction Acts, continued:
  • March 23, 1867, ch. 6, 15 Stat. 2
  • July 19, 1867, ch. 30, 15 Stat. 14
  • March 11, 1868, ch. 25, 15 Stat. 41
• July 27, 1868: Expatriation Act of 1868, ch. 249, 15 Stat. 223

• July 10, 1868: Fourteenth Amendment to the United States Constitution declared ratified
• February 26, 1869: Approved an amendment to the Constitution prohibiting the federal and state governments from denying a citizen the right to vote based on that citizen's "race, color, or previous condition of servitude", and submitted it to the state legislatures for ratification^[1]
  • Amendment was later ratified on February 3, 1870, becoming the Fifteenth Amendment to the United States Constitution^[1]

• April 29, 1868: Treaty of Fort Laramie (1868), 15 Stat. 635, signed
• February 16, 1869: Treaty of Fort Laramie (1868) ratified

• July 25, 1868: Wyoming Territory organized,^[2] Sess. 2, ch. 135, 15 Stat. 178

The count below identifies party affiliations at the beginning of the first session of this Congress, and includes members from vacancies and newly admitted states, when they were first seated. Changes resulting from subsequent replacements are shown below in the "Changes in membership" section.

During this Congress, Arkansas, Florida, Alabama, North Carolina, Louisiana, and South Carolina were readmitted to representation in both the Senate and the House. Georgia was readmitted with representation in the House only.

• President: Vacant
• President pro tempore: Benjamin Wade (R)
• Republican Conference Chairman: Henry B. Anthony
• Democratic Campaign Committee Chairman: James Rood Doolittle

• Speaker: Schuyler Colfax (R), until March 3, 1869
  • Theodore M. Pomeroy (R), elected March 3, 1869. Served for 1 day.

This list is arranged by chamber, then by state. Senators are listed by class, and representatives are listed by district.

Skip to House of Representatives, below

Senators were elected by the state legislatures every two years, with one-third beginning new six-year terms with each Congress. Preceding the names in the list below are Senate class numbers, which indicate the cycle of their election. In this Congress, Class 1 meant their term ended with this Congress, requiring re-election in 1868 or 1869; Class 2 meant their term began in the last Congress, requiring re-election in 1870 or 1871; and Class 3 meant their term began in this Congress, requiring re-election in 1872 or 1873.

Alabama edit ▌2. Willard Warner (R), from July 13, 1868 ▌3. George E. Spencer (R), from July 13, 1868 Arkansas edit ▌2. Alexander McDonald (R), from June 22, 1868 ▌3. Benjamin F. Rice (R), from June 23, 1868 California edit ▌1. John Conness (R) ▌3. Cornelius Cole (R) Connecticut edit ▌1. James Dixon (R) ▌3. Orris S. Ferry (R) Delaware edit ▌1. George Read Riddle (D), until March 29, 1867 ▌ James A. Bayard Jr. (D), from April 11, 1867 ▌2. Willard Saulsbury Sr. (D) Florida edit ▌1. Adonijah Welch (R), from June 17, 1868 ▌3. Thomas W. Osborn (R), from June 25, 1868 Georgia edit 2. Vacant 3. Vacant Illinois edit ▌2. Richard Yates (R) ▌3. Lyman Trumbull (R) Indiana edit ▌1. Thomas A. Hendricks (D) ▌3. Oliver H. P. T. Morton (R) Iowa edit ▌2. James W. Grimes (R) ▌3. James Harlan (R) Kansas edit ▌2. Edmund G. Ross (R) ▌3. Samuel C. Pomeroy (R) Kentucky edit ▌2. James Guthrie (D), until February 7, 1868 ▌ Thomas C. McCreery (D), from February 19, 1868 ▌3. Garrett Davis (D) Louisiana edit ▌2. John S. Harris (R), from July 8, 1868 ▌3. William Pitt Kellogg (R), from July 9, 1868 Maine edit ▌1. Lot M. Morrill (R) ▌2. William P. Fessenden (R) Maryland edit ▌1. Reverdy Johnson (D), until July 10, 1868 ▌ William Pinkney Whyte (D), from July 13, 1868 ▌3. George Vickers (D), from March 7, 1868 Massachusetts edit ▌1. Charles Sumner (R) ▌2. Henry Wilson (R) Michigan edit ▌1. Zachariah Chandler (R) ▌2. Jacob M. Howard (R) Minnesota edit ▌1. Alexander Ramsey (R) ▌2. Daniel S. Norton (R)

Mississippi edit 1. Vacant 2. Vacant Missouri edit ▌1. John B. Henderson (R) ▌3. Charles D. Drake (R) Nebraska edit ▌1. Thomas Tipton (R) ▌2. John M. Thayer (R) Nevada edit ▌1. William M. Stewart (R) ▌3. James W. Nye (R) New Hampshire edit ▌2. Aaron H. Cragin (R) ▌3. James W. Patterson (R) New Jersey edit ▌1. Frederick T. Frelinghuysen (R) ▌2. Alexander G. Cattell (R) New York edit ▌1. Edwin D. Morgan (R) ▌3. Roscoe Conkling (R) North Carolina edit ▌2. Joseph C. Abbott (R), from July 14, 1868 ▌3. John Pool (R), from July 14, 1868 Ohio edit ▌1. Benjamin Wade (R) ▌3. John Sherman (R) Oregon edit ▌2. George H. Williams (R) ▌3. Henry W. Corbett (R) Pennsylvania edit ▌1. Charles R. Buckalew (D) ▌3. Simon Cameron (R) Rhode Island edit ▌1. William Sprague IV (R) ▌2. Henry B. Anthony (R) South Carolina edit ▌2. Thomas J. Robertson (R), from July 15, 1868 ▌3. Frederick A. Sawyer (R), from July 16, 1868 Tennessee edit ▌1. David T. Patterson (D) ▌2. Joseph S. Fowler (R) Texas edit 1. Vacant 2. Vacant Vermont edit ▌1. George F. Edmunds (R) ▌3. Justin S. Morrill (R) Virginia edit 1. Vacant 2. Vacant West Virginia edit ▌1. Peter G. Van Winkle (R) ▌2. Waitman T. Willey (R) Wisconsin edit ▌1. James R. Doolittle (R) ▌3. Timothy O. Howe (R)

The names of members of the House of Representatives are preceded by their district numbers.

Alabama edit ▌ 1. Francis W. Kellogg (R), from July 22, 1868 ▌ 2. Charles W. Buckley (R), from July 21, 1868 ▌ 3. Benjamin W. Norris (R), from July 21, 1868 ▌ 4. Charles W. Pierce (R), from July 21, 1868 ▌ 5. John B. Callis (R), from July 21, 1868 ▌ 6. Thomas Haughey (R), from July 21, 1868 Arkansas edit ▌ 1. Logan H. Roots (R), from June 22, 1868 ▌ 2. James M. Hinds (R), June 22, 1868 – October 22, 1868 ▌ James T. Elliott (R), from January 13, 1869 ▌ 3. Thomas Boles (R), from June 22, 1868 California edit ▌ 1. Samuel B. Axtell (D) ▌ 2. William Higby (R) ▌ 3. James A. Johnson (D) Connecticut edit ▌ 1. Richard D. Hubbard (D) ▌ 2. Julius Hotchkiss (D) ▌ 3. Henry H. Starkweather (R) ▌ 4. William H. Barnum (D) Delaware edit ▌ At-large. John A. Nicholson (D) Florida edit ▌ At-large. Charles M. Hamilton (R), from July 1, 1868 Georgia edit ▌ 1. Joseph W. Clift (R), from July 25, 1868 ▌ 2. Nelson Tift (D), from July 25, 1868 ▌ 3. William P. Edwards (R), from July 25, 1868 ▌ 4. Samuel F. Gove (R), from July 25, 1868 ▌ 5. Charles H. Prince (R), from July 25, 1868 6. Vacant ▌ 7. Pierce M. B. Young (D), from July 25, 1868 Illinois edit ▌ 1. Norman B. Judd (R) ▌ 2. John F. Farnsworth (R) ▌ 3. Elihu B. Washburne (R) ▌ 4. Abner C. Harding (R) ▌ 5. Ebon C. Ingersoll (R) ▌ 6. Burton C. Cook (R) ▌ 7. Henry P. H. Bromwell (R) ▌ 8. Shelby M. Cullom (R) ▌ 9. Lewis Winans Ross (D) ▌ 10. Albert G. Burr (D) ▌ 11. Samuel S. Marshall (D) ▌ 12. Jehu Baker (R) ▌ 13. Green B. Raum (R) ▌ At-large. John A. Logan (R) Indiana edit ▌ 1. William E. Niblack (D) ▌ 2. Michael C. Kerr (D) ▌ 3. Morton C. Hunter (R) ▌ 4. William S. Holman (D) ▌ 5. George W. Julian (R) ▌ 6. John Coburn (R) ▌ 7. Henry D. Washburn (R) ▌ 8. Godlove S. Orth (R) ▌ 9. Schuyler Colfax (R) ▌ 10. William Williams (R) ▌ 11. John P. C. Shanks (R) Iowa edit ▌ 1. James F. Wilson (R) ▌ 2. Hiram Price (R) ▌ 3. William B. Allison (R) ▌ 4. William Loughridge (R) ▌ 5. Grenville M. Dodge (R) ▌ 6. Asahel W. Hubbard (R) Kansas edit ▌ At-large. Sidney Clarke (R) Kentucky edit ▌ 1. Lawrence S. Trimble (D) 2. Vacant ▌ 3. Elijah Hise (D), until May 8, 1867 ▌ Jacob Golladay (D), from December 5, 1867 ▌ 4. J. Proctor Knott (D) ▌ 5. Asa Grover (D) ▌ 6. Thomas L. Jones (D) ▌ 7. James B. Beck (D) ▌ 8. George M. Adams (D) ▌ 9. Samuel McKee (R), from June 22, 1868 Louisiana edit ▌ 1. J. Hale Sypher (R), from July 18, 1868 ▌ 2. James Mann (D), July 18, 1868 – August 26, 1868 ▌ 3. Joseph P. Newsham (R), from July 18, 1868 ▌ 4. Michel Vidal (R), from July 18, 1868 ▌ 5. W. Jasper Blackburn (R), from July 18, 1868 Maine edit ▌ 1. John Lynch (R) ▌ 2. Sidney Perham (R) ▌ 3. James G. Blaine (R) ▌ 4. John A. Peters (R) ▌ 5. Frederick A. Pike (R) Maryland edit ▌ 1. Hiram McCullough (D) ▌ 2. Stevenson Archer (D) ▌ 3. Charles E. Phelps (C) ▌ 4. Francis Thomas (R) ▌ 5. Frederick Stone (D) Massachusetts edit ▌ 1. Thomas D. Eliot (R) ▌ 2. Oakes Ames (R) ▌ 3. Ginery Twichell (R) ▌ 4. Samuel Hooper (R) ▌ 5. Benjamin F. Butler (R) ▌ 6. Nathaniel P. Banks (R) ▌ 7. George S. Boutwell (R) ▌ 8. John D. Baldwin (R) ▌ 9. William B. Washburn (R) ▌ 10. Henry L. Dawes (R) Michigan edit ▌ 1. Fernando C. Beaman (R) ▌ 2. Charles Upson (R) ▌ 3. Austin Blair (R) ▌ 4. Thomas W. Ferry (R) ▌ 5. Rowland E. Trowbridge (R) ▌ 6. John F. Driggs (R) Minnesota edit ▌ 1. William Windom (R) ▌ 2. Ignatius L. Donnelly (R) Mississippi edit 1. Vacant 2. Vacant 3. Vacant 4. Vacant 5. Vacant Missouri edit ▌ 1. William A. Pile (R) ▌ 2. Carman A. Newcomb (R) ▌ 3. Thomas E. Noell (D), until October 3, 1867 ▌ James R. McCormick (D), from December 17, 1867 ▌ 4. Joseph J. Gravely (R) ▌ 5. Joseph W. McClurg (R), until July 1868 ▌ John H. Stover (R), from December 7, 1868 ▌ 6. Robert T. Van Horn (R) ▌ 7. Benjamin F. Loan (R) ▌ 8. John F. Benjamin (R) ▌ 9. George W. Anderson (R) Nebraska edit ▌ At-large. John Taffe (R) Nevada edit ▌ At-large. Delos R. Ashley (R)

New Hampshire edit ▌ 1. Jacob H. Ela (R) ▌ 2. Aaron F. Stevens (R) ▌ 3. Jacob Benton (R) New Jersey edit ▌ 1. William Moore (R) ▌ 2. Charles Haight (D) ▌ 3. Charles Sitgreaves (D) ▌ 4. John Hill (R) ▌ 5. George A. Halsey (R) New York edit ▌ 1. Stephen Taber (D) ▌ 2. Demas Barnes (D) ▌ 3. William E. Robinson (D) ▌ 4. John Fox (D) ▌ 5. John Morrissey (D) ▌ 6. Thomas E. Stewart (CR) ▌ 7. John W. Chanler (D) ▌ 8. James Brooks (D) ▌ 9. Fernando Wood (D) ▌ 10. William H. Robertson (R) ▌ 11. Charles H. Van Wyck (R) ▌ 12. John H. Ketcham (R) ▌ 13. Thomas Cornell (R) ▌ 14. John V. L. Pruyn (D) ▌ 15. John Augustus Griswold (R) ▌ 16. Orange Ferriss (R) ▌ 17. Calvin T. Hulburd (R) ▌ 18. James M. Marvin (R) ▌ 19. William C. Fields (R) ▌ 20. Addison H. Laflin (R) ▌ 21. Roscoe Conkling (R), until March 4, 1867 ▌ Alexander H. Bailey (R), from November 30, 1867 ▌ 22. John C. Churchill (R) ▌ 23. Dennis McCarthy (R) ▌ 24. Theodore M. Pomeroy (R) ▌ 25. William H. Kelsey (R) ▌ 26. William S. Lincoln (R) ▌ 27. Hamilton Ward Sr. (R) ▌ 28. Lewis Selye (IR) ▌ 29. Burt Van Horn (R) ▌ 30. James M. Humphrey (D) ▌ 31. Henry H. Van Aernam (R) North Carolina edit ▌ 1. John R. French (R), from July 15, 1868 ▌ 2. David Heaton (R), from July 25, 1868 ▌ 3. Oliver H. Dockery (R), from July 13, 1868 ▌ 4. John T. Deweese (R), from July 6, 1868 ▌ 5. Israel G. Lash (R), from July 20, 1868 ▌ 6. Nathaniel Boyden (C), from July 13, 1868 ▌ 7. Alexander H. Jones (R), from July 6, 1868 Ohio edit ▌ 1. Benjamin Eggleston (R) ▌ 2. Rutherford B. Hayes (R), until July 20, 1867 ▌ Samuel F. Cary (IR), from November 21, 1867 ▌ 3. Robert C. Schenck (R) ▌ 4. William Lawrence (R) ▌ 5. William Mungen (D) ▌ 6. Reader W. Clarke (R) ▌ 7. Samuel Shellabarger (R) ▌ 8. Cornelius S. Hamilton (R), until December 22, 1867 ▌ John Beatty (R), from February 5, 1868 ▌ 9. Ralph P. Buckland (R) ▌ 10. James M. Ashley (R) ▌ 11. John T. Wilson (R) ▌ 12. Philadelph Van Trump (D) ▌ 13. George W. Morgan (D), until June 3, 1868 ▌ Columbus Delano (R), from June 3, 1868 ▌ 14. Martin Welker (R) ▌ 15. Tobias A. Plants (R) ▌ 16. John Bingham (R) ▌ 17. Ephraim R. Eckley (R) ▌ 18. Rufus P. Spalding (R) ▌ 19. James A. Garfield (R) Oregon edit ▌ At-large. Rufus Mallory (R) Pennsylvania edit ▌ 1. Samuel J. Randall (D) ▌ 2. Charles O'Neill (R) ▌ 3. Leonard Myers (R) ▌ 4. William D. Kelley (R) ▌ 5. Caleb N. Taylor (R) ▌ 6. Benjamin M. Boyer (D) ▌ 7. John M. Broomall (R) ▌ 8. J. Lawrence Getz (D) ▌ 9. Thaddeus Stevens (R), until August 11, 1868 ▌ Oliver J. Dickey (R), from December 7, 1868 ▌ 10. Henry L. Cake (R) ▌ 11. Daniel M. Van Auken (D) ▌ 12. Charles Denison (D), until June 27, 1867 ▌ George W. Woodward (D), from November 21, 1867 ▌ 13. Ulysses Mercur (R) ▌ 14. George F. Miller (R) ▌ 15. Adam J. Glossbrenner (D) ▌ 16. William H. Koontz (R) ▌ 17. Daniel J. Morrell (R) ▌ 18. Stephen F. Wilson (R) ▌ 19. Glenni W. Scofield (R) ▌ 20. Darwin A. Finney (R), until August 25, 1868 ▌ S. Newton Pettis (R), from December 7, 1868 ▌ 21. John Covode (R) ▌ 22. James K. Moorhead (R) ▌ 23. Thomas Williams (R) ▌ 24. George V. Lawrence (R) Rhode Island edit ▌ 1. Thomas Jenckes (R) ▌ 2. Nathan F. Dixon Jr. (R) South Carolina edit ▌ 1. B. Frank Whittemore (R), from July 18, 1868 ▌ 2. Christopher C. Bowen (R), from July 18, 1868 ▌ 3. M. Simeon Corley (R), from July 25, 1868 ▌ 4. James H. Goss (R), from July 18, 1868 Tennessee edit ▌ 1. Roderick R. Butler (R) ▌ 2. Horace Maynard (R) ▌ 3. William B. Stokes (R) ▌ 4. James Mullins (R) ▌ 5. John Trimble (R) ▌ 6. Samuel M. Arnell (R) ▌ 7. Isaac R. Hawkins (R) ▌ 8. David A. Nunn (R) Texas edit 1. Vacant 2. Vacant 3. Vacant 4. Vacant Vermont edit ▌ 1. Frederick E. Woodbridge (R) ▌ 2. Luke P. Poland (R) ▌ 3. Worthington C. Smith (R) Virginia edit 1. Vacant 2. Vacant 3. Vacant 4. Vacant 5. Vacant 6. Vacant 7. Vacant 8. Vacant West Virginia edit ▌ 1. Chester D. Hubbard (R) ▌ 2. Bethuel Kitchen (R) ▌ 3. Daniel Polsley (R) Wisconsin edit ▌ 1. Halbert E. Paine (R) ▌ 2. Benjamin F. Hopkins (R) ▌ 3. Amasa Cobb (R) ▌ 4. Charles A. Eldredge (D) ▌ 5. Philetus Sawyer (R) ▌ 6. Cadwallader C. Washburn (R) Non-voting members edit ▌ Arizona Territory. Coles Bashford (I) ▌ Colorado Territory. George M. Chilcott (R) ▌ Dakota Territory. Walter A. Burleigh (R) ▌ Idaho Territory. Edward D. Holbrook (D) ▌ Montana Territory. James M. Cavanaugh (D) ▌ New Mexico Territory. Charles P. Clever (D), from September 2, 1867 - February 20, 1869 ▌ J. Francisco Chaves (R), from February 20, 1869 ▌ Utah Territory. William H. Hooper (D) ▌ Washington Territory. Alvan Flanders (R)

The count below reflects changes from the beginning of the first session of this Congress.

• Replacements: 3
  • Democratic: 0 seat net loss
  • Republican: 0 seat net gain
• Deaths: 1
• Resignations: 2
• Interim appointments: 1
• Seats from newly re-admitted states: 12
• Total seats with changes: 16

• Replacements: 10
  • Democratic: 2 seat net loss
  • Republican: 0 seat net gain
  • Independent Republican: 1 seat net gain
  • Conservative: 0 seat net gain
• Deaths: 8
• Resignations: 3
• Contested election: 3
• Seats from re-admitted states: 32
• Total seats with changes: 44

Lists of committees and their party leaders for members of the House and Senate committees can be found through the Official Congressional Directory at the bottom of this article. The directory after the pages of terms of service lists committees of the Senate, House (Standing with Subcommittees, Select and Special) and Joint and, after that, House/Senate committee assignments. On the committees section of the House and Senate in the Official Congressional Directory, the committee's members on the first row on the left side shows the chairman of the committee and on the right side shows the ranking member of the committee.

• Agriculture (Chairman: Simon Cameron; Ranking Member: Thomas W. Tipton)
• Appropriations (Chairman: Lot M. Morrill; Ranking Member: Cornelius Cole)
• Audit and Control the Contingent Expenses of the Senate (Chairman: Aaron H. Cragin; Ranking Member: Charles R. Buckalew)
• Claims (Chairman: Timothy O. Howe; Ranking Member: Justin S. Morrill)
• Commerce (Chairman: Zachariah Chandler; Ranking Member: Henry W. Corbett)
• Distributing Public Revenue Among the States (Select)
• District of Columbia (Chairman: James Harlan; Ranking Member: James W. Patterson)
• Education
• Engrossed Bills (Chairman: Joseph S. Fowler; Ranking Member: Daniel S. Norton)
• Finance (Chairman: John Sherman; Ranking Member: Alexander G. Cattell)
• Foreign Relations (Chairman: Charles Sumner; Ranking Member: Oliver P. Morton)
• Impeachment of President Andrew Johnson (Select)
• Impeachment Trial Investigation (Select)
• Indian Affairs (Chairman: John B. Henderson; Ranking Member: John M. Thayer)
• Judiciary (Chairman: Lyman Trumbull; Ranking Member: Roscoe Conkling)
• Manufactures (Chairman: William Sprague IV; Ranking Member: Cornelius Cole)
• Military Affairs and the Militia (Chairman: Henry Wilson; Ranking Member: Oliver P. Morton)
• Mines and Mining (Chairman: John Conness; Ranking Member: Richard Yates)
• Naval Affairs (Chairman: James W. Grimes; Ranking Member: Frederick T. Frelinghuysen)
• Ninth Census (Select)
• Ordnance and War Ships (Select) (Chairman: Jacob M. Howard; Ranking Member: Charles D. Drake)
• Pacific Railroad (Chairman: Jacob M. Howard; Ranking Member: William M. Stewart)
• Patents and the Patent Office (Chairman: Waitman T. Willey; Ranking Member: Orris S. Ferry)
• Pensions (Chairman: Peter G. Van Winkle; Ranking Member: Thomas W. Tipton)
• Post Office and Post Roads (Chairman: Alexander Ramsey; Ranking Member: James Harlan)
• Private Land Claims (Chairman: Godlove Stein Orth; Ranking Member: Daniel S. Norton)
• Public Buildings and Grounds (Chairman: William P. Fessenden; Ranking Member: Orris S. Ferry)
• Public Lands (Chairman: Samuel C. Pomeroy; Ranking Member: George H. Williams)
• Representative Reform (Select)
• Retrenchment (Chairman: George F. Edmunds; Ranking Member: James W. Patterson)
• Revision of the Laws (Chairman: Roscoe Conkling; Ranking Member: N/A)
• Revolutionary Claims (Chairman: James W. Nye; Ranking Member: David T. Patterson)
• Rules
• Tariff Regulation (Select)
• Territories (Chairman: Richard Yates; Ranking Member: Alexander Ramsey)
• Treasury Printing Bureau (Select)
• Whole

• Accounts (Chairman: John M. Broomall; Ranking Member: William C. Fields)
• Agriculture (Chairman: Rowland E. Trowbridge; Ranking Member: John T. Wilson)
• Appropriations (Chairman: Thaddeus Stevens; Ranking Member: Benjamin F. Butler)
• Banking and Currency (Chairman: Theodore M. Pomeroy; Ranking Member: Norman B. Judd)
• Claims (Chairman: John A. Bingham; Ranking Member: Amasa Cobb)
• Coinage, Weights and Measures (Chairman: William D. Kelley; Ranking Member: John Hill)
• Commerce (Chairman: Elihu B. Washburne; Ranking Member: James M. Humphrey)
• District of Columbia (Chairman: Ebon C. Ingersoll; Ranking Member: Fernando Wood)
• Education and Labor (Chairman: Jehu Baker; Ranking Member: Thomas Cornell)
• Elections (Chairman: Henry L. Dawes; Ranking Member: Burton C. Cook)
• Expenditures in the Interior Department (Chairman: Chester D. Hubbard; Ranking Member: Ginery Twichell)
• Expenditures in the Navy Department (Chairman: Charles Upson; Ranking Member: Francis Thomas)
• Expenditures in the Post Office Department (Chairman: William A. Pile; Ranking Member: John H. Ketcham)
• Expenditures in the State Department (Chairman: Samuel M. Arnell; Ranking Member: Reader W. Clarke)
• Expenditures in the Treasury Department (Chairman: James M. Marvin; Ranking Member: Bethuel M. Kitchen)
• Expenditures in the War Department (Chairman: William Williams; Ranking Member: Charles E. Phelps)
• Expenditures on Public Buildings (Chairman: Cadwallader C. Washburn; Ranking Member: Stevenson Archer)
• Freedmen's Affairs (Chairman: Thomas D. Eliot; Ranking Member: Daniel J. Morrell)
• Foreign Affairs (Chairman: Nathaniel P. Banks; Ranking Member: Austin Blair)
• Indian Affairs (Chairman: William Windom; Ranking Member: Glenni W. Scofield)
• Invalid Pensions (Chairman: Sidney Perham; Ranking Member: George F. Miller)
• Judiciary (Chairman: James F. Wilson; Ranking Member: William Lawrence)
• Manufactures (Chairman: Daniel J. Morrell; Ranking Member: William Moore)
• Mileage (Chairman: George W. Anderson; Ranking Member: Green B. Raum)
• Military Affairs (Chairman: James A. Garfield; Ranking Member: Green B. Raum)
• Militia (Chairman: Halbert E. Paine; Ranking Member: Austin Blair)
• Mines and Mining (Chairman: William Higby; Ranking Member: Morton C. Hunter)
• Naval Affairs (Chairman: Frederick A. Pike; Ranking Member: Thomas W. Ferry)
• Pacific Railroads (Chairman: Hiram Price; Ranking Member: Oakes Ames)
• Patents (Chairman: Thomas A. Jenckes; Ranking Member: Henry P.H. Bromwell)
• Post Office and Post Roads (Chairman: John F. Farnsworth; Ranking Member: John Lynch)
• Private Land Claims (Chairman: Godlove Stein Orth; Ranking Member: Alexander H. Bailey)
• Public Buildings and Grounds (Chairman: John Covode; Ranking Member: William Moore)
• Public Expenditures (Chairman: Calvin T. Hulburd; Ranking Member: John Coburn)
• Public Lands (Chairman: George W. Julian; Ranking Member: George W. Anderson)
• Revisal and Unfinished Business (Chairman: Luke P. Poland; Ranking Member: William Windom)
• Revolutionary Claims (Chairman: Hamilton Ward; Ranking Member: Daniel Polsley)
• Revolutionary Pensions and the War of 1812 (Chairman: Benjamin F. Loan; Ranking Member: Lewis Selye)
• Roads and Canals (Chairman: Burton C. Cook; Ranking Member: Grenville M. Dodge)
• Rules (Select) (Chairman: Schuyler Colfax; Ranking Member: James G. Blaine)
• Standards of Official Conduct
• Territories (Chairman: James M. Ashley; Ranking Member: James Mullins)
• Ways and Means (Chairman: Robert C. Schenck; Ranking Member: John A. Logan)
• Whole

• Conditions of Indian Tribes (Special)
• Enrolled Bills (Chairman: Rep. Stephen F. Wilson; Vice Chairman: Rep. William S. Holman)
• The Library (Chairman: John D. Baldwin; Vice Chairman: Rep. Rufus P. Spalding)
• Printing (Chairman: Rep. Addison H. Laflin; Vice Chairman: Rep. Henry L. Cake)
• Ordnance (Select) (Chairman: Rep. John A. Logan; Vice Chairman: Rep. Robert C. Schenck)
• Reorganize the Civil Service in the Departments
• Retrenchment (Chairman: Rep. Charles H. Van Wyck; Vice Chairman: Rep. Thomas A. Jenckes)
• Revise and Equalize the Pay of the Employees of Each House
• To Examine the Accounts for Repairs and Furnishing of the Executive Mansion (Chairman: Rep. Rufus P. Spalding; Vice Chairman: Rep. Adam J. Glossbrenner)

• Democratic (House)
• Democratic (Senate)

• Architect of the Capitol: Edward Clark, appointed August 30, 1865
• Librarian of Congress: Ainsworth Rand Spofford

• Chaplain of the Senate: Edgar H. Gray (Baptist)
• Secretary of the Senate: John W. Forney, until June 4, 1868
  • George C. Gorham, elected June 4, 1868
• Sergeant at Arms of the Senate: George T. Brown

• Chaplain of the House: Charles B. Boynton (Congregationalist)
• Clerk of the House: Edward McPherson
• Doorkeeper of the House: Charles E. Lippincott
• Messenger to the Speaker: William D. Todd
• Postmaster of the House: William S. King
• Reading Clerks: Edward W. Barber (D) and William K. Mehaffey (R)
• Sergeant at Arms of the House: Nehemiah G. Ordway

• List of members of the United States House of Representatives in the 40th Congress by seniority
• 1866 United States elections (elections leading to this Congress)
  • 1866–67 United States Senate elections
  • 1866–67 United States House of Representatives elections
• 1868 United States elections (elections during this Congress, leading to the next Congress)
  • 1868 United States presidential election
  • 1868–69 United States Senate elections
  • 1868–69 United States House of Representatives elections

• Martis, Kenneth C. (1989). The Historical Atlas of Political Parties in the United States Congress. New York: Macmillan Publishing Company.
• Martis, Kenneth C. (1982). The Historical Atlas of United States Congressional Districts. New York: Macmillan Publishing Company.
• Byrd, Robert C.; Wolff, Wendy (October 1, 1993). The Senate, 1789-1989: Historical Statistics, 1789-1992 (volume 4 Bicentennial ed.). U.S. Government Printing Office. ISBN 9780160632563.

• Statutes at Large, 1789-1875
• Senate Journal, First Forty-three Sessions of Congress
• House Journal, First Forty-three Sessions of Congress
• Biographical Directory of the U.S. Congress
• U.S. House of Representatives: House History
• U.S. Senate: Statistics and Lists
• Congressional Directory for the 40th Congress, 2nd Session.
• Congress, United States (1869). Congressional Directory for the 40th Congress, 3rd Session.