Aircraft Warning Service Ground Observer Spotter Cards, undated

Aviation Ephemera III contains 22 files of information on various subjects in aviation history. There are photos, letters, air show programs, museum brochures, advertising items, and technical booklets. The inclusive dates of this collection span from 1909 to 1964. Predominantly, the artifacts date from the late teens to 1940. The collection is a companion to Special Collections and Archives three other aviation ephemera collections, MS-37, MS-156, and MS-226. A finding aid is included.