Polushkin's typescript"Rossiĭskiĭ Rodoslovynĭ Sbornik" (205 p. with 10 page supplement) is a survey of the Russian nobility throughout the Russian Empire. It primarily deals with noble families from the 17th-19th centuries, but also traces some families back to Ri︠u︡rk. The manuscript is indexed. The document is a table listing the Imperial Foreign Ministry staff in Europe from 1878 to 1917.