Matthews, Clarence W. The Design, Operation, and Uses of the Water Channel as an Instrument for the Investigation of Compressible-Flow Phonomena, Langley Air Force Base, VA: National Advisory Committee for Aeronautics, Technical Note 2008, 1950, Box: 17, Item: FN-7. Hans A. Einstein Flow collection, MS-89/4. Water Resources Collections & Archives. https://public.ucrlib.aspace.cdlib.org/repositories/5/archival_objects/582771 Accessed April 20, 2025.