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.

Program and tickets for a lecture in Portland, Oregon, featuring musical composer and lyricist Stephen Sondheim (1930-2021) and a proof of a playbill for a Portland production of Sondheim's musical "Company," with cast and crew autographs. The materials were compiled by theater producer Corey Brunish, who produced and directed "Company" in Portland in 2009, and who won a Tony for his Broadway production of "Company" in 2022.

Printed program for a tour by train of historic sites along the Columbia River via the Great Northern Railway, July 15-27, 1926, with maps.

Historical publications and posters collected by writer and researcher Thomas A. Emmens (1942-2005), including posters for Oregon Pioneer Association events, an issue of the Congressional Record including a speech about the Oregon Trail, an 1846 memorial to the U.S. Congress, and two issues of the Oregon Semi-Monthly Argus.

Collection consists of programs, 1918-1958, regarding the Eugene Gleemen, Lewis and Clark College, First Presbyterian Church and others. John Stark Evans was an organist and choirmaster at the First Presbyterian Church in Portland, Oregon, director of the Lewis and Clark College School of Music, and associate dean of music at the University of Oregon.

Memorabilia relating to the Portland, Oregon, soccer team the Portland Timbers, collected by the Lesowske family. Materials include season programs, a history of the team, a newspaper section about the team's Major League Soccer championship win, and ephemera. As of 2021, the Lesowske family had been attending Portland Timbers games for over 15 seasons.

Program and scripted remarks for a tribute dinner held for outgoing Oregon Governor Tom McCall (1913-1983), titled "A Toast and Roast of Tom McCall." McCall was governor of Oregon from 1967 to 1975, and his governorship was notable for its activism in environmental and conservation causes.

Records and memorabilia of the Oregon Girls Conference, an interdenominational Christian gathering for high school and college-age women sponsored by the United Church Women of Oregon. Collection materials include conference planning records, programs, president's records, a record book, songbooks, and photographs. The conference, which began in 1913 and was held annually through the 1980s, was also known as the Oregon Older Girls' Conference and the Older Girls' Conference.

This collection, created by the Oregon Historical Society, contains ephemera relating to the wine and spirits industry in Oregon. Included are clippings, brochures, newsletters, newspapers, magazines, wine labels, business cards, posters, programs, bulletins, and monographs, relating to wines, their production and marketing, relevant issues, and affiliated industries. Most of the materials date from 1972-2002.

Catalogs and programs for an annual livestock exhibition that took place in Portland, Oregon, beginning around 1910.