Abstract Harold A. McGinnis (1893-1986) served in the U.S. Army Signal Corps, Aviation Section as a pilot during World War I and remained in the military until his retirement in 1948. The collection contains pilot log books relating to World War I and photographs relating to World War I and pre-World War II era military aircraft.

Abstract The Paul A. Ludwig Military Aviation Photograph Collection contains 2382 photographic prints and negatives with a very small amount of textual materials collected by Paul A. Ludwig and ranging from the late 1910s through the early 1980s. The bulk and strength of the collection is photographs of World War II-era aircraft and squadrons. The collection is nearly all copy prints from a variety of institutions and dozens of private collections.