2023-10-182023-10-181971-03-12https://hdl.handle.net/2152.3/12089First day cover postmarked March 12, 1971. "Giving Blood Saves Lives" stamp. "Scalpel and Tongs" Monthly Newsletter Medical Subjects Unit American Topical AssociationOne envelope.Postage-stamp albumsStamp collectingFirst day covers (Philately)United States