Some of these interviews are restricted. The Andre Bell, Roy S. Clarke, Jr., Kristofer M. Helgen, Storrs L. Olson, Paul W. Pohwat, Paul D. Rhymer, and Mary E. Rice interviews cannot be used without their permission prior to 2050. The Leon Dixon, Donald Davis, David L. Pawson, and Martha Rosen interview transcripts cannot be used without their permission. The George Venable recording cannot be used without permission. The Audrey Butler, Alan Cheetham, Chip Clark, Elizabeth Dietrich, Nathan Erwin, Frank Greenwell, Gary Hevel, David Hunt, James Krakker, and Rusty Russell interviews are unrestricted. Contact SIHistory@si.edu to request permission.
Smithsonian Institution Archives, Record Unit 9622, National Museum of Natural History 100th Anniversary Oral History Interviews
New York Airways Collection, Acc. NASM.1992.0052, National Air and Space Museum, Smithsonian Institution.