https://findingaids.library.columbia.edu/archives/cul-12918931_aspace_9aba0b2006aed046f649ca2794a699f0
Subseries VII.1: Books inscribed by author to Alexander Sumerkin - Rare Book & Manuscript Library
https://findingaids.library.columbia.edu/archives/cul-12918931_aspace_44f5309297727fa18efbd81fe4b99273
Articles by Alexander Sumerkin, Novoe Russkoe Slovo, 1996-2003 - Rare Book & Manuscript Library