Bobby;
I have a set of those Miller's Falls chisels purchased from Herter's. I suspect I bought mine in the 60's as well, still use them occasionally. Haven't really done much stock work in a while now, but they served me well when I did. There were 6 in the set & I kept these as were, but somewhere along the way I picked up a set of 12 really cheap chisels. These had fairly narrow blades & I would shape them as needed for tight spots. They would in fact though take a good edge. Suspect they were simple carbon steel but this is all one really needs in a chisel, red heat being seldom produced while inletting. Plain high carbon steel is hard to beat for taking an edge.