A group of Drills, Copper, Iron, other Indian Arrow Heads from The Academy of Sciences circa 1930's

I have been working with this estate for approx. 13 years. The father and mother both worked with and for The Academy of Sciences in Baltimore Md from the late 1920's up until the Academy closed its doors. Over the years the estate went on Digs and also bought items from the Museum. I have numerous photos of the Museum and some of the exhibitions.
Here is a nice group of arrow heads the estate brought to me. Included are 7 Copper and Iron spear heads, 6 small drills made of Flint and or other stone materials and 5 flint and or other stone materials of Karankawa tribe. This tribe was an San Antonio Texas tribe that went extinct in the mid to late 1800's. The tribe was known for its Ritual Cannibalism.
If you have any questions or need additional photos, please feel free to email me.