Large Texas Blades I.D. Help

[KCBTX07]

Coworker told me had a couple big arrowheads he found yrs ago on family land. He brought them today and....Holy Cow! I about fell out of my chair lol.
I'm hoping you guys can help provide any info that I could pass along. Age, type, material, etc?

Both are surface finds from SE Texas in / or around the Colorado River. I believe both were found in the 1970's.

Thanks in advance!!

[UpNorth]

Now that’s a pair of Texas Honkers…. Texas guys will be along to help you out.
thanks for the show…..👍

[WAH]

Everything's bigger in Texas

[DiversionHound]

wow, that white one is huge! nice.

[KY-FarmLife]

Either you have SMALL HANDS or 'dem 'der be BIG BLADES! Wow.

[KCBTX07]

Average hands...that there's a BIG rock. The white colored one is approx 8-1/2" long.

[Overshot]

Cool! Both look like archaic knives.

[Hal Gorges]

😳😳