Some still aren't certain if the man behind the American symbol is Samuel Wilson. But Congress made September 13 a national day to commemorate the birth of the man behind the patriotic icon.
Sarah L. Voisin/The Washington Post
First things first, who is Uncle Sam?
Evelyn Hockstein/The Washington Post
What did Uncle Sam represent?
Harry Cabluck/Associated Press
There was another national symbol before Uncle Sam appeared. She symbolized the United States.
Uncle Sam didn't become widely known as a symbol until World War I. The iconic poster of him pointing was used to ask people to do what?
To feed the homeless
To pay taxes
To join the U.S. Army
Bonnie Jo Mount/The Washington Post
This person illustrated the iconic poster of Uncle Sam. He used himself as a model to depict Uncle Sam.
James Montgomery Flagg
Linda Davidson/The Washington Post
What year did Congress recognize that Samuel Wilson was the inspiration for Uncle Sam?
Mark Wilson/Associated Press
True or False? There is a statue of Samuel Wilson in Massachusetts.