Issue Date: September 20, 1972
City: Warm Springs, OR
Printed By: Bureau of Engraving and Printing
Printing Method: Lithographed, engraved
The importance of wildlife conservation is stressed with this block of four. While the Alaska Fur Seal, the Cardinal, and the Brown Pelican are not necessarily endangered, in the mid-1970s, there were fewer than 20,000 bighorned sheep. This issue points out the fact that wildlife conservation should be a major concern.