The apropos of the display is that the editor of the radio program entitled "The Post Box of Uncle Miska", Padisák Mihály, donated documents to the Museum of OPKM. This unparalleled documentation does not only record the history of the radio program, but also the chronicles the second part of the 20th century.

The program "The Record Box of Uncle Miska" was a request program for young people. It was first broadcasted in 1950. Later it turned into a program in which letters were answered and so was renamed. It was on from 1975 to 2001. The topic of the letters sent in was extremely variable mirroring the life of the aforementioned decades. Hundred of letters recorded historic events. The program was extremely popular among students and teachers at Hungarian populated areas over the borders. Padisák Mihály is an eternal member of the body of the Hungarian Radio. He was awarded with the Cross of the Hungarian Republic, the Prize of Hungarian Heritage and the Prima Prize.

The exhibition presents material discussed during the program "The Post Box f Uncle Miska": letters, texts from the program, scripts, applications, illustrated writings about Hungary, photos of the letter writers and their environment.