The collection includes correspondence from Konstantin Balḿont, Nikolaĭ Evreĭnov, Zinaida Gippius, Georgiĭ Grebenshchikov, Vasiliĭ Maklakov, Sergeĭ Potresov and Nadezhda Teffi. There is one letter each from Boris Bakhmeteff, Vera Bunina, Aleksandr Grechaninov, Aleksandr Kuprin and Alekseĭ Tolstoĭ. The manuscripts include poems and a play scenario by Nadezhda Teffi as well as Roshchina-Insarova's autobiographical essays and article about Sergeĭ Lifar.́ In addition, there are three scrapbooks containing clippings and programs of Roshchina-Insarova's performances, and approximately 40 photographs of her.

The papers consist of correspondence, autograph books, manuscripts, photographs and printed materials. There are letters from Mark Aldanov, Ivan Bunin, Antonin Ladinskiĭ, Vasiliĭ Nemirovich-Danchenko, Alekseĭ Remizov, Ivan Shmelev, Nadezhda Teffi and Boris Zaĭt︠s︡ev, as well as one letter each from Konstantin Balʹmont, Aleksandr Grechaninov, Vladislav Khodasevich, Aleksandr Kuprin, and Vladimir Nabokov. The autograph albums (owned by Marii︠a︡ A. Berman and Potresov) cover the years 1906-1907 and 1913-1948, respectively, and have entries by Balʹmont, Ivan Bilibin, Bunin, Nabokov, and Maksimili︠a︡n Voloshin, among others. The manuscripts include a poem by Mother Marii︠a︡ and articles, diaries, and a play by Potresov. The printed materials primarily consist of clippings of Potresov's articles in newspapers and journals. In addition to the loose clippings, there are six scrapbooks with clippings of Potresov's articles pasted in.