| Category | Sub-Categories | Boards |
| Railroads | 0 | 26 |
| Board | Threads | Messages | Last Post |
| Alcan Highway Construction Workers | 3 | 12 | 25 Sep 2013 |
| California Ferry Boats | 1 | 2 | 26 Nov 2004 |
| Canal Worker | 57 | 184 | 27 May 2015 |
| ITALIAN RAILROAD WORKERS 1900 | 0 | 0 | 27 Oct 2010 |
| Mississippi River Boats | 1 | 1 | 18 Feb 2008 |
| Pennsylvania Canals | 13 | 26 | 17 Mar 2013 |
| Private Yacht Captains | 0 | 0 | 16 Nov 2009 |
| Railroad Workers | 778 | 1314 | 23 Mar 2015 |
| River Boat Crews | 36 | 70 | 20 Feb 2015 |
| Shipbuilding | 6 | 9 | 19 Nov 2010 |
| Shipping | 12 | 34 | 27 Jun 2015 |
| Ships from Italy | 4 | 5 | 25 Aug 2012 |
| Steamships | 2 | 2 | 20 Jul 2012 |
| Wagon Train Captains | 9 | 12 | 23 May 2015 |