Locomotives, Diesel 7-1/2, 7-1/4" gauge

Cannonball
Locomotives rail & accessories  1.5" scale

Carr's Locomotives
1.6" scale 7 1/2" gauge electric powered model locomotives

Colorado Gandy Dancer
Custom parts & accessories for the Live Steam/Diesel hobby.

Crenshaw Locomotive Works
1-1/2" scale diesel switcher locomotives and transmissions.

E & S Lines
Scale reproductions of two classic EMD diesels: F7 and GP-7

Eaton Custom Engineering & Manufacturing
The "Husky" 2 axle diesel switcher.

Express Locos
F7 and other diesel battery powered kits in 7-1/4" gauge

IKON Engineering Development LTD
Steam, Electric and Diesel locomotives and rolling stock up to 750mm gauge

Kamilion Locomotive
Electric and Gas/Hydraulic "Diesel" locomotives from the 1940's-1960's in  1-1/2" scale.

Knightley Light Railway
Petrol or diesel hydraulic locomotives, in various styles including steam and diesel, British or US.

Mammoth Locomotive Works

Maxitrak Ltd
Kit locomotives in 1" ,2" & 2-1/2" scales in 4-3/4", 5",7-!/4" and 7-1/2" gauges. British, American and European prototypes, steam and diesel (road and rail)

MDM Locomotive Works
1.5" scale (7 -1/2" or 7 1/4" gauge) Locomotives, power trucks, and accessories

Mountain Car Company
GE Dash 9 Fully Assembled, powerful 16 HP V twin, large hydraulic pump with motors on each truck.

Pike Lake and Eastern
Build the "Critter"

Rail Systems Company Inc.
Amusement grade locomotives and rolling stock in gauges 12" to 24"

RailRiderSupply.com
7-1/4" to 7-1/2" Dual gage Fairmont Speeders, riding cars, frames, wheels, parts and accessories.

Railroad Supply Inc. 
1 1/2" scale gasoline powered GP-40, 25-Ton Switcher, F-7 Diesel locomotive kits and ready to run.

Real Trains

Rideable Train

Rio Pecos Garden Railway Co.

Roanoke

Roll Models, Inc.
Switchers, box cabs, trolleys