This attached block (booklet pane) of ten mint wildlife stamps was issued in a booklet format on May 14, 1981. This booklet pane is more scarce than most issued by the U.S.P.S. during this era; it is printed entirely in shades of brown, resulting in an attractive sepia image-like appearance. The ten stamps depict the following wildlife: Bighorned Sheep, Puma, Harbor Seal, Bison, Brown Bear, Polar Bear, Elk (Wapiti), Moose, White-Tailed Deer, and Pronghorned Antelope.

This 1978 Wildlife Conservation Issue highlighted four species of owls native to the United States: the Great Gray Owl, the Saw Whet Owl, the Barred Owl, and the Great Horned Owl. This attached block of four mint stamps was issued on August 26, 1978.

This sheet of eight mint wildlife stamps was issued to coincide with the Canadian International Philatelic Exhibition (1978 CAPEX), held in Toronto, Canada. The eight stamps depict the following mammals and birds indigenous to the United States and Canada: Cardinal, Mallard Duck, Canada Goose, Blue Jay, Moose, Chipmunk, Red Fox, and Raccoon.