The Annonymous Collection amalgamates materials from multiple donors and includes: Accrual W2011-14: 1 book of engineering drawings of Westinghouse #6 Engine and Tender (E.T.) Locomotive Brake Equipment and 1 book of engineering drawings of Westinghouse #8 E. T. Locomotive Brake Equipment, Accrual W2012-21: 1 book, "Steam Boilers" by E. M. Shealy, published by the University of Wisconsin in 1912, and 1 photograph, "Union Pacific Railroad Hangman Creek Trestle Spokane, Washington taken by Richard Hashagen. Accrual W2014-63: 1 box of newspaper clipping of advertisements for railroad travel. Accrual W2015-19: 1 water color by Howard Fogg. Accrual W2015-36: 4 maps of the Oregon Trunk Railway near Wishram, Washington, books on the Pullman Company, various railroad rule books. Accrual W2015-37: 5 VHS tapes on The Power of Milwaukee #261; The Best of 1985; Chicago Steam Celebration/ MILK #261; Union Pacific's 6900 Diesels; Riding the Rails, #4449, #261 Rebuild, Steamtown Grand Opening, The New Georgia Railroad. Accrual W2015-50: "Hillyard Drawings" of Great Northern Railway structures from the 1940's and 1950's. Accrual W2016-17: Great Northern, Nothern Pacific track profiles and plats in western Washington, Russell Company maps of Sedro-Woolley, Washington and Bellingham, Washington, and a Burlington Nothern system map. Accrual W2017-53: a topographical map of Butte, Montana from 1897. Accrual W2017-77: a Nothern Pacific demurrage from Prosser, Washington for 1941-1946, 3 maps of the Lester, Washington area, a book of electrical drawings for the Nothern Pacific's Lester, Washington headquarters. Accrual W2017-87: The Milwaukee Road Instruction Book for Class EP-2 Locomotives and a book "The Walschaert and Other Modern Radial Valve Gears for Locomotives", 1916, by W. W. Wood.