Trivia

While several views of swastika flags were blotted out, other instances of Nazism were missed, e.g. as the German torch bearer turns left into the grand stadium avenue, in the lower left corner of screen can be seen four militarily-clad males giving the Nazi salute; plus as the same torch bearer descends the stadium steps all the youths lining the way are giving the Nazi salute, even with four outstretched arms in very front of the camera.

Stock footage of the dirigible Hindenburg was retouched, frame by frame, to blot out the swastikas emblazoned on the airship's tail.

The film, which referenced the Hindenburg as a means of transportation and included stock footage of it, was released 15 days following the Hindenburg disaster on May 6, 1937 in which the dirigible exploded into flames and crashed at the Lakehurst Naval Air Station.

Layne Tom Jr. claimed it was remarkable that Warner Oland was not of Asian descent. He believed that Oland (a Swede) looked naturally Asian without any makeup and without his fake eyebrows and stylized facial hair. He also said that Oland embodied true characteristics of Chinese men at the time: humility, discretion, and wisdom.

Only appearance of Layne Tom Jr. as Charlie Chan's variably-named son whilst Warner Oland was in the rôle.