Finding aids for four newly cataloged collections have been added to the OASIS database this month: Processed by: Michael Austin Progressive Party records, 1908-1920 (MS Am 3078) Minimally Processed by: Adrien Hilton Christopher Durang papers, 1957-2013 (MS Thr 1379) Processed by: Erin Mernoff with assistance from Andrea Cawelti Sheet music by performer, circa 1800-2000…