These look wonderful! There's people here on t-net who are expert and can tell you the age, era and use of each. My untrained eyeball loves those excellent arrowheads you found, but I don't know if the others are spearpoints, scrapers, or whatever. Really awesome find! Have fun! Andy
Awesome finds. You will find out more if you repost in North American Artifacts, and please add a photo with something for size comparison. You have some beautiful stuff there. Welcome to T-Net.