Just a guess, as I don't recognize the tang stamp, but the bottom line sure looks like it says Utica, NY which makes me guess that the top line at one time said Iroquois. Of the names that have come out of Utica, that's the one that seems closest to what I can make out on your knife. I haven't been able to find an Iroquois tang stamp in cursive, though. I'm sure somebody with more knowledge will be along shortly.