Alexander E. Borthwick was a Civil War veteran, railroad engineer and government servant who came to Portland in 1869. His son, William L. Borthwick, was a civil engineer and a Klansman. The collection includes correspondence, diaries, ledgers, photographs of the Borthwick family as wells as diaries and correspondence of the Saunders family who were related by marriage to William L. Borthwick.
William F. Dielschneider and his brother Franz owned and ran the Dielschneider Jewelry store of McMinnville, Oregon, which also sold and repaired watches and clocks. The collection contains a cash book, watch sales and repair ledgers, a clock repair ledger, diamond record books, manufacturers' and jobbers' catalogues, and photographs.