For those of you who remember Professor Arpad Kadarkay, he recently forwarded me pictures that were taken of him by the Hungarian secret police in the 1970s when he was in that country doing research. His pictures are part of a larger exhibition on the Czechoslovak and Hungarian secret services. You can see him on the right in the surveillance picture below.
There is an article in Hungarian on the exhibition here:
you can use Google Translate to get a very rough sense of the content.
There's also a brief summary here in English.
