USPS Cover of Wildflowers, American Legion and John Sloan Artwork

USPS in 1992 Issued 29-cent postage stamps from their 'Wildflowers series". Each stamp featured a different wildflower native to the United States. Shown here is the Bearberry, Mexican Hat, Harebell, Desert Five Spot and Smooth Solomon's Seal. These were the first US commemorative issue printed completely by offset lithography. It was the first 50-stamp pane printed by a private contractor.

Shown on this cover are also two 6-cent postage stamps issued on 15 March 1969 to commemorate the 50th anniversary of the American Legion. The design depicted an adaptation of the bald eagle from the Great Seal of the United States, clutching an olive branch. The text "The American Legion," "50 years," and "Veterans as Citizens" are also prominent. It was designed by Robert Hallock. It was printed using a lithographed and engraved Giori press. 

Lastly, a 8-cent stamp called "The Wake of the Ferry" was issued in 1971 to commemorate American artist John Sloan (1871-1951) who was a member of the Ashcan School, known for his realistic depictions of urban life in New York City. He was a leading figure in this movement, which focused on portraying the gritty realities of urban life. He was also a teacher and his influence extended to artists like Jackson Pollock.