Peter W. Barlow
- Observations on the niagara bridge. Dans: Journal of The Franklin Institute, v. 71, n. 3 (mars 1861). (1861):
- Observations on the Niagara Bridge. Dans: Journal of The Franklin Institute, v. 71, n. 2 (février 1861). (1861):
- Observations on the Niagara bridge. Dans: Journal of The Franklin Institute, v. 71, n. 1 (janvier 1861). (1861):