1. Henke Coll 1_199 Reference (shelfmark): Henke Coll 1_199 Title: United States of America 50th Anniversary of Migratory Bird Treaty Issue 5c stamp Scope & Content: Marginal block of four perforated MNH stamps with control number depicting migratory birds. The stamp was designed by B. E. Pringle. Collection Area: Philatelic Collections Languages: English Date Range: 16 Mar 1966 Extent: 4 Items