The director of UDBA for SR Macedonia Ivan Babamovski reports a conversation between agent "Niko" and Blaže Ristovski (then director of the Marko Cepenkov Institute of Folklore); "On February 28, 1974, I had an interview with the source who informed me about the contact he had with Dr. Blaže Ristovski, the director of the Institute of Folklore of the SRM... In front of "Niko" at the bureau was the 10th volume of the complete "Marko Cepenkov's works" published by "Makedonska kniga"... Ristovski asked him if he was reading the book, to which he received a confirmed answer. Then "Niko" told him that some things were confusing him and read him several works that said: "the inhabitants of Prilep are Bulgarians", "Macedonian Bulgarians" and similar things. Ristovski told him that he deliberately wrote the preface in the presented style, trying to show the historical and socio-economic moment of Cepenkov. There was not a single word ever, where Cepenkov presented himself as a Macedonian. He personally studied hundreds of documents, but never found any other material from the processing. This must not be an obstacle for us to present Cepenkov as a well-deserved cultural activist of Macedonia." For more see: Библиотека и издателство "Струмски". Блаже Ристовски от с. Гърничково, Кавадаречко, Вардарска Македония. "Службена белешка", Скопје, 1974 година.
