Findlay Foundry, Carleton Place, Ontario, was a Canadian cast iron foundry that made cast iron fireplace inserts, free-standing stoves, beginning with the "Franklin" type low stoves and then bigger "parlor" stoves and kitchen ranges. Also many other cast iron items. They produced sets of cookware, skillets, tea kettles, pots, Dutch ovens and baking pans.
I don't recall the dates of production offhand but i think the skillets date to the '30s and '40s. They went out of business somewhere in the late '60s.
I would have to look up the details if I could find my cast iron book, which seems to have wandered off from its usual place.
They began making skillets, griddles, sauce pots and Dutch ovens just after WWI and continued into the '40s. They offered them free with their "premium" kitchen ranges, and sold them separately, mostly in general merchandise stores and in what we would now term "convenience stores" small country stores that sold gasoline, kerosene and coal. I got this information from a collector in Niagara whose grandparents owned one of those country stores.