Gatorboy, I wouldn't doubt at all that both of those you have pictured are bone handles. They are what I envision many of my "unfinished base" stemmed points were once hafted, or maybe I should say were once "socketed", into. What are your thoughts on what these were handles for, chipped stone knives, or something else?
I once read a study on stemmed points found up here in the mid Atlantic area. The study argued that most of the stemmed points had very consistent width measurements, when measured right below the shoulder area. The study also noted that microscopic wear or unintentional chipping could be seen on the upper stem right below the shoulder area, and contended that it was evidence that those points were once socketed into bone handles, producing the microscopic wear at the contact points between the stone and bone. This all makes me curious to know if you can see any evidence of wear on your bone handles, in the areas where a stone point would have been in contact with them?