In order to represent the statistics of “The Photogrammetric Week Series” properly it should be mentioned here, that after World War II Carl Zeiss, Jena tried to continue this series in photogrammetry for the Eastern Block countries, parallel to those jointly organized by Carl Zeiss, Oberkochen and University Departments in West Germany. Horst Schoeler and Erich Feldkeller organized two courses as the 21st Photogrammetric Week (April 14 to May 12, 1958) in Prague and the 22nd Photogrammetric Week (June 6 to July 1, 1961) in Budapest, mainly for Eastern European photogrammetric professionals.