100th Anniversary National Academy of Sciences Block of Stamps

FIRST DAY OF ISSUE PRESIDENT LINCOLN AT THE SIGNING OF ACADEMY CHARTER IN 1863 Ar Craft CADEMY OF 1863 SCIENCES O NOTION THE UNITED TES OF AMERICA 1963 100 TH ANNIVERSARY FOUNDED 1863 NATIONAL ACADEMY of SCIENCES WASHINGTON, D. C. 5¢ THE SCIENCES 5¢ SHING OCT 14 9.AM 2 CCCS FIRST DAY OF ISSUE 1963 U.S. POSTAGE THE SCIENCES THE SCIENCES 5¢ THE SCIENCES