A guide to coal-mine ventilation as distributed by the Federal Board for Vocational Education.
Maxwell, Hearl (1892-1974) Collection, 1911-1931
SpC MS 0008
Washington -- Washington County -- Washington D.C.
Pittsburg State University, Axe Library, Special Collections with English 557/757 Digital Humanities.
Digital image copyright 2016, Special Collections & Archives, Leonard H. Axe Library, Pittsburg State University. All rights reserved. For more information contact Special Collection, Library Services, 1701 South Broadway, Pittsburg, KS 66762-5889. Phone: 620-235-4883
Federal Board for Vocational Education, "Coal-Mine Ventilation, 1919, November," (2016). Hearl Maxwell Collection, 1911-1931. 80.