Maybe most blacksmiths weren't cutlers, but probably most blacksmiths made knives.
You can't make generalizations about what happened in 1905 according to today's definitions of who did what. My dad grew up in southeast Missouri, about a million miles, figuratively speaking, from here and now. Blacksmiths were busy and creative people. They built the stuff that people needed, and their customers didn't care that their new knife didn't have the fit and finish of a Marbles knife. Mail order knives cost money, blacksmiths would often work for barter. My dad's family ran a sawmill, they often traded firewood, labor and hauling for other goods.
Making blades and attaching handles isn't a black art, I made my first knife out of a piece of lath and a tailgate hinge when I was twelve. It cut just fine, therefore it was a knife. I'm not a cutler.
In any event, I have no idea what your post has to do with mine. Hoyt Buck was a blacksmith, he undoubtedly made knives. That's all. Write to the fine folks at Buck, and ask them if Hoyt made knives. I'd bet we all know the answer to that question.