Released on August 4, 2003, this is the 24th coin released in the 50 State Quarters Program and the fourth released in 2003. Missouri, admitted into the Union on August 10, 1821, themed the coin, Corps of Discovery. It highlights Lewis and Clark's historic return to St. Louis down the Missouri River, with the Jefferson National Expansion Memorial Gateway Arch in the the background. President William J. Clinton was in office when this legislation was signed. Three United States Mint Directors served under President Clinton's tenure; David J. Ryder of Idaho, Philip N. Diehl of Texas, and Jay W. Johnson of Wisconsin.