1. Henke Coll 1_208 Reference (shelfmark): Henke Coll 1_208 Title: United States of America 50th Anniversary of the National Park Service Issue 5c stamp Scope & Content: Marginal block of four perforated MNH stamps with control number depicting the NPS Emblem. The stamp was designed by T. Geismar. Collection Area: Philatelic Collections Languages: English Date Range: 25 Aug 1966 Extent: 4 Items