Documents / FOIA release
This is National Intelligence Estimate 11-5-61, Soviet Technical Capabilities in Guided Missiles and Space Vehicles. It was submitted by the Director of Central Intelligence and concurred in by the United States Intelligence Board on 25 April 1961. The estimate assesses Soviet surface-to-air, antimissile, air-to-air, air-to-surface, ballistic, ICBM, naval and space programs. It concludes that the first Soviet ICBM unit was probably operational around 1 January 1960. It also says there is no evidence the Soviets are developing offensive space weapons. It contains no UFO material.
“Gray”1 page
Figure 26 MOSCOW PARADE, NOVEMBER 1960 55-4 SURFACE-TO-SURFACE MISSILE ESTIMATED U. S. Designation IOC Date Maximum Range Propulsion Configuration Guidance Accuracy Maximum Warhead Weight Ground Environment CHARACTERISTICS SS-4 Late 1958/early 1959 1100 N.M. Liquid, probably LOX/kerosine Single Stage Radio/inertial 1% N.M. 3,000 Pounds Road Mobile S T
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FOIA release, from the cia-readingroom collection. The PDF is mirrored here; the original link is above. 101 pages are in the text index: search them above, or from the library's search.