In 1986, the United States issued a set of souvenir sheets honoring the Presidents. This "First Day Cover" was cancelled in Chicago on the first day the stamps were available for sale.
James A. Garfield, 20th President of the United States; was born in Orange,  Ohio, November 19, 1831. He was inaugurated March 4, 1881. On the morning of July 2, 1881, while passing through the Pennsylvania Railroad Depot in Washington, D.C., was shot by Charles J. Guiteau. Garfield died from the effects of the wound, in Elberon, N.J., September 19, 1881.

Garfield is shown on the Cachet of this First Day

     "Graphically Cropped" from a larger block, here is a block of four from the "Presidential Series" (commonly known as the Prexies) of 1938. As the 20th President of the U.S., Garfield shows up on the 20 stamp.