The references and sources in the table below have been used in the construction of this website and are referenced from the pages where used.
| Ref. # | Source |
|---|---|
| 1 | By courtesy of The Internet Archive - Wayback Machine: Dump of TheShipsList |
| 2 | Norway-Heritage - Hands Across the Sea |
| 3 | Otis, Fessenden Nott) (1861); Illustrated History of The Panama Railroad, Harper & Brothers, New York |
| 4 | Provenance unconfirmed but possibly 'Harper's Magazine' |
| 5 | By courtesy of Geographicus Antique Maps |