John J. Rowe; The Newcomen Society of England American Branch New York(Digital Initiatives; University of Toledo; Ward M. Canaday Center for Special Collections, 2011-08-15)
S. W. and P.A. Durant, R.P. Hinckley, D.P. Kayner, J.N. Wheeler, George Rossiter, civil engineers(Digital Initiatives; University of Toledo; Ward M. Canaday Center for Special Collections, 2012-01-19)