Research, Reference and Plans:
Anthology of Ship Model Plans
Art of the Model Builder Marine
Bowling Green State University  Center for Archival Collections
Floating Drydock
Navigation Rules U.S. Coast Guard website
Smithsonian Institution Museum of American History Ship Plans
Shipbuilding History 
Steam Boat History
Taubman Plan Service
United States Maritime Commission 1936 Thru 1950
U.S. Navy Armed Guard and U.S. Merchant Marine in World War II

Manufacturers & Suppliers:

Hobby Shop Locators:
Hobbytown USA  National franchise stores.
Horizon Hobby - Hobby Shop Locator

RTR & ARF Models, Kits & Hulls:
Aquacraft      Bearco    Billing Boats    Bluejacket    Dumas    Graupner    Great Planes    Harbor Models   Hobby Express     Horizon Hobby    Italeri    Kyosho    Lindberg Models     Loyalhanna     MackProducts    Midwest Products    Model Expo    Model Slipway    Pro Boat    Tamaya    ThunderTiger    Tower Hobbies   Vac-U-Boat    Victor Models    

Electronics: Radios, ESC:
Airtronics    Astroflight    Futaba  Harbor Models   Hitec    JR Radios     Mtroniks    Spektrum    Tekin     Traxxas    Vantec

Motors, Propellers, Lights, Fittings, Accessories:
East Coast Scale Accessories   Harbor Models   Miniatronics    Model Yacht Fittings    Pittman Motor     RamR/C    Rivabo

General Suppliers: Tools, Hardware, Materials and Supplies:
American Science & Surplus    Badger Airbrush    Batteries Plus    Dremel    Dubro    Evergreen Plastics    Harbor Freight   K&S Engineering    Micro-Mark    Northern Tool & Equipment    Paasche Airbrush    Plastruct    Sig Mfg Co    Sherline Tools    Taig Tools    Testors    Tormach   X-Acto