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.

Papers of and relating to Mary V. Dodge (1876-1954), a violin teacher who lived in Portland, Oregon, and Burns, Oregon. In the 1910s, she founded the Sagebrush Symphony in Burns; she later led the Irvington School Orchestra in Portland, which became the Portland Junior Symphony (later the Portland Youth Philharmonic).

Collection consists of two photographs: a hand colored group portrait of the Mary V. Dodge Irvington School Orchestra, and a black and white group portrait of the Portland Junior Symphony on a stage. Dorothy Scales (then Dorothy Edlefsen) is among the people in the photographs but is not identified.