Known affectionately as the “Prexies,” the 1938 Presidential series is a favorite among stamp collectors. The 21¢ denomination pictures Chester Arthur. As a lawyer, Chester Arthur fought for the rights of African Americans. In 1855, he won a case that established the rights of blacks in New York City to ride any streetcar. The Prexies The series was issued in response to public clamoring for a new Regular Issue series. The series that was current at the time had been in use for more than a decade. President Franklin D. Roosevelt agreed, and a contest was staged. The public was asked to submit original designs for a new series picturing all deceased U.S. Presidents. Over 1,100 sketches were submitted, many from veteran stamp collectors. Elaine Rawlinson, who had little knowledge of stamps, won the contest and collected the $500 prize. Rawlinson was the first stamp designer since the Bureau of Engraving and Printing began producing U.S. stamps who was not a government employee.