Solomon W. Roberts
- Bridge foundations. — Description of the mode of founding the piers of the Ohio and Pennsylvania railroad bridge, across the Allegheny River at Pittsburgh. Dans: Journal of The Franklin Institute, v. 60, n. 5 (novembre 1855). (1855):
- Bridge foundations.—Description of the mode of founding the piers of the Ohio and Pennsylvania Railroad Bridge, across the Allegheny River at Pittsburgh. Dans: Journal of The Franklin Institute, v. 30, n. 5 (novembre 1840). (1840):