Correspondence and papers from a folder labelled, 'Leningrad Symposium'. Material relates to International Astronomical Union (IAU) Symposium No. 14, 'The Moon', 5-12 December 1960, Leningrad, Russia, and includes: requests to various academics for papers; attendees; publicising the event, publishing the conference proceedings and so forth.
Other material includes a quantity of related photographs and charts, for example, lunar rilles and domes.
Proceedings of the symposium, some 60 papers, 30 of which Russian, were edited by ZK and published as, by Academic Press, in 1961. The Russian papers were translated by the U.S. Air Force.