Cohen, A. B. Progress and Development of Concrete Work on the Delaware, Lackawanna and Western Railroad, Reprint from the Proceedings of the American Concrete Institute, vol. X, pp. 1-27, 1914

Cohen, A. B. Progress and Development of Concrete Work on the Delaware, Lackawanna and Western Railroad, Reprint from the Proceedings of the American Concrete Institute, vol. X, pp. 1-27, 1914, MSA 71, File 1, Item 1, Box: Communal Collections 4, Folder: 1, Item: 1. Abe Bert Cohen papers, MSA 71. Purdue University Archives and Special Collections. https://archives.lib.purdue.edu/repositories/2/archival_objects/48334 Accessed December 21, 2024.