[39.] ltr., H.L. Daulton, Vice President and Secretary-Treasurer, Sierra Engineering Company, to W.A. Daler, Headquarters Air Materiel Command, subject: Proposal, Purchase Request No. 301200, September 16, 1954, National Archives and Records Administration, Accession No. 342-67E-2954, box 5/15, file 28.

[40.] Joseph Smreka, Senior Design Engineer, First Technology Safety Systems, “Dummies—Past and Present,” 2 (unpublished manuscript).

[41.] Sierra Engineering Co., “Sierra Sam,” 1955, National Archives and Records Administration, Accession No. 342-67E-2954, box 5/15, file 28.

[42.] 1st Lt. Raymond A. Madson, High Altitude Balloon Dummy Drops, Part I. The Unstabilized Dummy Drops, WADC Technical Report 57-477, (Wright Patterson AFB, OH: Wright Air Development Center, Oct 1957) (hereafter High Altitude Balloon Dummy Drops Part I), 27, and 1st Lt. Raymond A. Madson, High Altitude Balloon Dummy Drops, II. The Stabilized Dummy Drops, WADC Technical Report 57-477 (II) (Wright Patterson AFB, OH: Aeronautical Systems Division, Air Force Systems Command, August 1961) (hereafter High Altitude Balloon Dummy Drops Part II), 18.

[43.] High Altitude Balloon Dummy Drops Part I, 1.

[44.] High Altitude Balloon Dummy Drops Part I, and High altitude Balloon Dummy Drops Part II, and Holloman Air Development Center, Weekly Test Status Reports, Project MX-1450B (Manned Balloon), National Archives and Records Administration, National Personnel Records Center, St. Louis, MO, Accession No. 342-62A-A-641, box 115/248, folder; R-695-61D, “High Altitude Escape Studies, Gen B-1, Manned Balloon Flights.”

[45.] ibid.

[46.] High Altitude Balloon Dummy Drops Part I, 1, and High altitude Balloon Dummy Drops Part II, 18.

[47.] Capt. Joseph W. Kittinger, Jr., The Long, Lonely Leap, (New York: E.P. Dutton & Co., Inc., 1961), and Lt. Col. David G. Simons, Man High, (New York: Doubleday & Company, Inc., 1960), and Capt. Joseph W. Kittinger, Jr., “The Long, Lonely Leap,” National Geographic 118, no. 6 (December 1960): 854-873, “Fantastic Catch in the Sky, Record Leap towards Earth,” Life 49, no. 9 (August 29, 1960): 20–25, Popular Mechanics Magazine, January 1951: 118, Collier’s, June 25, 1954, Time, September 12, 1955, “The Fastest Man on Earth”.

[48.] Don Reilly, “MAD Salutes an Unsung Hero,” MAD, no. 61, (March 1961), 46.