The papers of Jacob Avshalomov consist of correspondence, clippings, programs, musical scores, certificates, memoir books, photographs, and publications relating mostly to his musical career, as well as those of his sons, David and Daniel, and his Russian-born father, Aaron. Also included are programs, reviews, and photographs of the Portland Junior Symphony (later the Portland Youth Philharmonic), which he led from 1954 to 1995.

Oral history interview with Irina Francis conducted by Katy Weaver on November 15, 2017, for The Immigrant Story. Francis grew up in Soviet Russia and immigrated to the United States in the 2010s.