This Canadian maker is the only one I have so far. The hallmark says : HAM STAMP & STENCIL HAMILTON ON, so I have made the leap to assuming that the HAM stands for HAMILTON. I doubt that this is a last name like the C.T.HAM Manufacturing Company. that made lanterns in the US.

I have no further information on this maker. The logo design on this check can be found on makerless checks, so you can't assume too much about dates. I am reluctant to clean the makers hallmark because of the raised letters. This maker is a tough one to find.
 

Hamilton Stamp & Stencil check

The makers hallark is almost impossible to read on this check. The letters are actually raised whcih make this an oddity. The Grand Truck (even this logo) had a long life span, so this check and maker are very hard to date.