The National Postal Museum is the repository of a number of exceptional philatelic and three-dimensional airmail collections. Among these treasures is the Emma Batchelor collection, materials from the life and flights of Amelia Earhart and artifacts from airmail's early days donated by Benjamin Lipsner, the first Superintendent of the Air Mail Service (1918-1919).
In addition to specialized airmail collections, the Museum has a comprehensive collection of U.S. airmail stamps and postal stationery materials, an array of airmail covers from the 19th century to the present.