Flanagan designed the WashingtonU.S. quarter dollar coin, which was issued in 1932. Flanagan's initials can be found at the base of Washington's neck. Flanagan designed both sides of the quarter. He also designed a medallion commemorating the World War I Battle of Verdun. The inscription on it reads, 'They Shall Not Pass', and the medal is found in the Lafayette Database of American Art in French National collections.