Brooklyn bridge - "Report of the Board of Consulting Engineers to the Directors of the New York Bridge Company (Brooklyn : Printed by the Standard Press, 1869)",, 1869, May

Brooklyn bridge - "Report of the Board of Consulting Engineers to the Directors of the New York Bridge Company (Brooklyn : Printed by the Standard Press, 1869)",, 1869, May, Box: 7, Folder: 2. Roebling Family Collection, MC 654. New Brunswick Special Collections. https://archives.libraries.rutgers.edu/repositories/11/archival_objects/323343 Accessed November 19, 2024.