Correspondence, reports, documents, handwritten notes related to the meetings, activities and membership of the Executive Bureau.
Letter by Gigas, OEEPE President, to Schermerhorn exploring opportunities for cooperation with the French IGN in Paris on the realization of a « Carte Internationale du Monde au millionieme », 1/3/1963
Letter by Neumaier, OEEPE Secretary General, to the American Society of Photogrammetry sending information about the OEEPE, 5/3/1965
Communication to the Commissions by the Executive Bureau, discussing ways of accelerating the publication of OEEPE works/projects, 12/03/1965
Invitation by Martin Hill, UN Deputy Undersecretary for Economic and Social Affairs, to send an observer to the 5th UN Regional Cartographic Conference, 30/11/1966
Presented paper of the Commission IV at the 11th Congress for Photogrammetry in Lausanne 1968 – Brief Report of the results of the Reichenbach test
Invitation for a tender on provision of Aerial Survey services 03/01/1969, related list of specifications, maps, correspondance and offers
Letter by Bachmann, OEEPE Swiss Group, to Knorr, OEEPE President, Institut fur Angewandte Geodasie, stating the willingness of Switzerland to rejoin the OEEPE, 03/11/1969, and related correspondence. Reply by Knorr on 06/11/1969.

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