The 1809 Missouri Fur Co. lists knives and pen knives. The 1822 McKnight list has cartouche, buck, brass inlaid, and clasp. Robert Newell 1836 just lists knives, Wyeth lists butcher knives, , Indian knives, red handled Indian knives, buck handled knives, dirk knives. Ashley 1825 has knives, pen knife. Fontenelle, Fitzpatrick & Co.- outfitted by the American Fur Co. have buck handled, green bone, scalping normal, cast steel butcher, in 1836 and w. Scalping, Wilson's Butcher, W. Cartouche, green bone handled in 1837, and the UMO in 1835 (AF Co. supplied) has Wilson butcher knives.
The NW Co. in 1820 has scalping knives, yellow handled folding knives, barrwood cartouche knives, sham stag , square joint folding, 7" dags, brass inlaid. The NW Co and HB Co. don't appear to have sold Wilson or Russell type butcher knives.
So.... sometimes just "knives" are listed, often these were goods going to Indians so "knives" may have meant scalpers, especially if the price was low. Other times scalpers and butcher knives are listed. The important thing to bear in mind is that it seems from the inventory lists that those in the trade had no problem identifying a scalper, butcher, brass inlaid, dag, etc.