Member of Wernher von Braun’s rocket team (1915–1996). Three pages of handwritten notes and schematics by Hosenthien: a detailed schematic, in pencil, on an 11 x 8.5 sheet of graph paper, labeled “AC Function Multiplier”; an 8.5 x 11 lined page with four mathematical equations and notes; and an 8 x 10 sheet of onionskin paper taken from a larger report. In overall fine condition. Accompanied by a printed letter of authenticity from Ken Havekotte. RRAuction COA.
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