Armin Kießlich from Spremberg sent me some result lists of the World Championships from 1959 to 1975 – thanks!
The World Championships which are still missing in my archive are 1949 to 1957, 1971 and 1977.
Armin Kießlich (firstname.lastname@example.org) has got a lot more result lists, bulletins etc. from competitions in the 1960s and 1970s. Feel free to contact him when you are looking for something special.