On October 3, 1965, the Czechoslovak Scientific Society for Mycology organized a special excursion for invited members to the forests near Karlštejn. Twenty-six mycologists participated, including guest Dr. Derek A. Reid from Kew, UK. The report documents the event and group photo participants.
Kotlaba F. (1966): Excursio autumnalis mycologorum bohemoslovenicorum in silvas prope arcem Karlštejn anno 1965. – Česká Mykologie 20(2): 125–127.