Mike, you've posted up some fine looking knives!
Your grandfather's Pal 36 and the faux pearl Iroquios caught my eye That Iroquios stamping isn't very common, Iroquois Utica N.Y, and Iroquios made in USA is a Utica Cutlery Co, marking from 1920-1940
And of course your 2 blade jack, shell handled Imperial is an awesome workhorse of a knife!
Some great knives, thanks for sharing them