After publication of the occurrence of C14 in nature and the first successful datings made by the radiocarbon method (Anderson et al., 1947; Arnold and Libby, 1949), a fair number of physicists as well as geologists, paleobotanists, and prehistorians in Germany became interested (e.g., Harteck, 1951; Zeuner, 1951; Firbas, 1953; Schwabedissen, 1949) in studying the applicability of the new method. So, one of us (H.S.) together with F. Firbas tried to stimulate plans by F. Houtermans (later at Bern, Switzerland) to organize a dating laboratory at Göttingen, before 1950. When the Heidelberg laboratory was founded, close contact was kept with O. Haxel and K. O. Münnich by providing them with carefully selected samples covering a variety of prehistoric ages (partly published in Heidelberg I). Samples were also submitted to Washington, D. C. (see USGS III, I, II), Yale (see Yale III), and Copenhagen (unpub.).