The one dollar coin features a  portrait of Leif Ericson on the obverse, (the explorer thought to have landed in the area now known as North America five centuries before Columbus). The reverse side of the coin is his ship proudly sailing the seas. (500,000 minted)

Another one dollar coin commemorates Ericson as well… in this coin the explorer is shown in profile. The reverse side has the giant from the Icelandic Coat of Arms, along with a dragon, an eagle, and a bull. (150,000 minted)

A one dollar coin featuring the Library of Congress has a rendering of an open book with a torch shining over it… the torch is to represent seeking knowledge on the obverse. The dome of the Jefferson Building …