Petko Ogoyski showing the shoulder-belt, self-made by him for the hard schlep-work in the forced labour camp in Belene on the island Persin.
During communist times, the materials showing the repressive nature of the communist regime in Bulgaria were hidden at the birthplace of Petko Ogoyski, in the village of Ogoya, located between Sofia and the city of Vratsa. They were openly shown and made known to the public after the political turn in November 1989. After the end of the socialist state, numerous events were organized in which Petko Ogoyski participated and used materials of his collection (s. Events).