In EG234 (page 194), Jaroslav Polášek did write an article titled:

Quality Control: Corrections and reconstruction of older EG studies.

(Polasek, Jaroslav 1957)

At the end he points out that the studies can be downloaded from:

Below these corrections and the originals from this pgn-file.

If you want to read the complete article with all his comments, become a member of magazine EG