The collection consists of correspondence, manuscripts by Sidorova and a photograph, presumably of Sidorova (1970). The manuscripts (signed Evgenii︠a︡ Mor, her pseudonym) include short stories, poems and essays about the second world war. Particularly noteworthy are long essays on the painter Kuzḿa Petrov-Vodkin (including lists of his works in private collections) and the playwright Evgeniĭ Shvart︠s︡, both of whom Sidorova knew personally. There are also brief essays about the writers Alekseĭ Pli︠u︡shkin (Ugri︠u︡mov) and Ivanov-Razumnik.