100th Anniversary of the Smithsonian Institute

FIRST DAY OF ISSUE Smithsonian Institute 100th An Exhibition Room ANNIVERSARY of the Smithsonian Institute FOUNDED IN 1846 UNDER THE WILL OF JAMES SMITHSON FOR THE INCREASE AND DIFFUSION OF KNOWLEDGE AMONG MEN SHING AUG10 9-AM 1946 D.C FOR THE INCREASE AND DIFFUSION OF KNOWLEDGE AMONG MEN 1846 SMITHSONIAN INSTITUTION 1946 FIRST DAY OF ISSUE-