Abstract: This collection is comprised of correspondence, drawings, manuals, lists, specifications, and photographs that were part of the Milwaukee Road Mechanical Department. The bulk of documents are from the 1930s to 1970s. The records include those for Locomotives (with related tenders used during and after the steam era) used by the railroad to haul freight and passengers, freight cars, passenger cars, and shop records. Later documents incorporate records on the retirement, salvage, and dismantling of railroad assets in the 1970s and early 1980s.