This is the photo of H Kephart's knife, along a drawing of it, taken from the
online Kephart museum
This was the photo I used to make my versions. Now, it is quite possible (probable) the knife on the photo started looking like the drawing, with the curved cutting edge and, after years of shrpening & service ended with the straight cutting edge. Or the drawing has a certain amount of "artistic license" applied to it...Who knows. Either way, Kephart still considered his knife servicable with the straight cutting edge, as he still had it and it was available to go into a "museum". There were different length available too, even then, the manufacturers tried to "cash in" on his notoriety.
It would be quite easy to make the knife with the curved blade and the sheath exactly the same as the original. It's hard to tell for sure, but the drawing appears to show a flat grind, so the section on the blade would be triangular, but the photo seem to tell a slightly different story. Either way the pointy bit is sharper on bo the the drawing and the photo than many reproductions are. I think I may well have a go at it, soon-ish. Mind you, inflation has worked it's magic, hasn't it!
Also, the museum is where I found the picture of his fishing knife, but I can't find it now...it's a bit of a rambling place! The other bit of kit I like is his folding candle lantern!