Released April 3, 2006, this is the 37th coin released in the 50 State Quarters Program and the second coin released in 2006. Nebraska, admitted into the Union on March 1, 1867, themed the coin Chimney Rock. The image highlights an ox-drawn covered wagon carrying pioneers and Chimney Rock in 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.