The bulk of the collection consists of letters by various people to Bohdan Hoshovs’kyi, an editor of a book about Oleksander Lotots’kyi. The collection also contains works by O. Lotots’kyi as well as the materials about him by various authors, including writings about Oleksander Lotots’kyi by Borys Lotots’kyi (his son) and Roman Smal-Stost’kyi (who was his co-worker in Warsaw), a Lotots’kyi bibliography and some notes regarding Oksana Tokazhevs’ka Karashevych, O. Lotots’kyi’s daughter.