Papers produced by NASA and correspondence relating to Apollo 15, collected by Colin Pillinger Correspondence and papers on the Apollo 15 lunar samples and their allocation. A NASA newsletter 14 July 1971 mentions the exchange of Apollo lunar sample material with the Soviet Union in return for material collected during the Russian Luna 16 mission, and a letter from Michael B Duke at NASA 16 November 1971 to Principle Investigators discusses an exchange of scientists studying lunar samples between the USSR and USA. Includes blank sample return forms. Correspondents: Michael B. Duke, NASA Dr Colin Trevor Pillinger, University of Bristol Everett K. Gibson, NASA Dr J.W. Chamberlain, NASA Mr R.I. Logan, Science Research Council Anthony J. Calio, NASA Geoffrey Eglinton, University of Bristol 14 July 1971 - 12 May 1975