There was a cute gag, right off the bat, when Tom Thumb's dad first sees his newborn kid (delivered by the stork). The baby is in the palm of his wife's hand. Tom looks up - already in diapers - and says, "Hi ya, pop!" Pop faints.
The years go on and we see how little Tom manages to inadvertently get in trouble, like almost being baked in a pie. The inquisitive sort, he winds up in a lot of jams, only to be saved by either by luck or his scolding mom, who winds up giving him a loving-but-stern and strange spanking near the end.
Overall, to be honest this was not a very humorous cartoon but it had a lot of charm, so kudos for that. It was part of the UB Iwerks' collection of cartoons under the DVD title, "Cartoons That Time Forgot."
