Foundry established in Chicago in 1855 by R.T. Crane which became a major industry in manufacturing electrical and plumbing supplies. Records were kept by stenographer/cashier Margaret Laue, mostly pertaining to Crane Co.'s social events for employees, including plays, programs, centennial events, and an annual picnic at Riverview Amusement Park. Includes cards, invitations, programs, desk diaries, tickets, pins, and medals.