Manufacturer's Codes

[EODGUY]

Can anyone provide the codes used by the following WWI era companies? Thanks in advance for any help.

Russell Motor Car Company, Toronto, Canada 9.2-inch Howitzer HE bodies
Sherbrooke Ironworks, Sherbrook, Quebec, Canada 4.7-inch gun HE projectile bodies.
Spartan Manufacturing Company, Montreal, Quebec, Canada 4.72-inch AA projectiles; 4.7-inch gun HE and AA projectiles.
Steel Company of Canada, Brantford, Ontario, Canada 75mm gas and HE projectiles
St. Lawrence Bridge Company, Montreal, Quebec, Canada 9.2-inch howitzer HE projectile bodies.
Taylor Forbes, Ltd, Toronto, Ontario, Canada 155mm howitzer HE projectile bodies
Warden King & Company, Montreal, Quebec, Canada, 155m Howitzer HE projectile bodies.
West Shell & Box Company, North Edmonton, Alberta, Canada 3-inch HE AA projectile bodies
W.H. Banfield and Sons, Toronto, 75mm gas and HE projectile bodies
P. Lyall and Sons, Montreal, Quebec, Canada 155mm howitzer he bodies; 4.7-inch HE projectile bodies
P. Tyrall Construction Company, Montreal, Quebec, Canada 5-inch seacoast gun projectile bodies.
Otis Fenson Elevator Company, 155mm howitzer HE projectile bodies.
Motor Trucks Company, Brantford, Ontario, Canada 4.7-inch gun and 240mm HE projectile bodies.
Munition and M.N., Ltd., Sorel, Quebec, Canada 155mm howitzer HE projectile bodies.
National Iron Works, Toronto, Ontario, Canada 155mm howitzer HE projectile bodies

 

[Snufkin]

Can anyone provide the codes used by the following WWI era companies? Thanks in advance for any help.

Russell Motor Car Company, Toronto, Canada R.M.Co. Ltd
Sherbrooke Ironworks, Sherbrook, Quebec, Canada S.I.W.
Spartan Manufacturing Company, Montreal, Quebec, Canada S.M.Co. Ltd
Steel Company of Canada, Brantford, Ontario, Canada S.C.C.B.
St. Lawrence Bridge Company, Montreal, Quebec, Canada Can only find St Lawrence Iron Foundry Company which is St L. I. F.
Taylor Forbes, Ltd, Toronto, Ontario, Canada T.F.C.
Warden King & Company, Montreal, Quebec, Canada. ?
West Shell & Box Company, North Edmonton, Alberta, Canada W.S & B. Co.
W.H. Banfield and Sons, Toronto ?
P. Lyall and Sons, Montreal, Quebec, Canada LYALL
P. Tyrall Construction Company, Montreal, Quebec, Canada ?
Otis Fenson Elevator Company O.F.E.Co.
Motor Trucks Company, Brantford, Ontario, Canada ?
Munition and M.N., Ltd., Sorel, Quebec, Canada Munition & Machinery Ltd? - M. & M.
National Iron Works, Toronto, Ontario, Canada ?

Some identified above. Companies producing non-British calibres are not always listed in British Government documents, but then even some supplying British calibres might also be absent.