¹ Of these nineteen, three were Sputniks, one was a U.S.S.R. Lunik, planned as a lunar probe, and eight were American military satellites developed by the military outside the framework of the IGY. See chapter 13, n. 26.

² Klawans and Burghardt, Vanguard Launch Vehicle, pp. 7, 171-175.

³ Ltr; Rosen to C. McL. Green, 15 Mar 1968, with encl, "A Brief History of Delta and Its Relation to Vanguard."

⁴ Thomas E. Jenkins, "Budget Forecasting and Cost Control of Cost-Plus Development Contracts," 26 Oct 1959, copy in NHF.

⁵ Interviews, Homer Newell, 19 Dec, and Capt. Berg, 28 Aug 1967; see Klawans and Burghardt, Vanguard Launch Vehicle, pp. 7, 171-175.

⁶ Interview, Homer Newell, 26 Aug 1966.

⁷ Min 19th mtg TPESP, 26 July 1958, p. 5.