I mentioned a couple of the extension offices from which I used data, here are the main ones: https://forestry.usu.edu/forest-produ..., http://www.forestry.ok.gov/Websites/f...

If you want even more data like this, you can check-out these other sources as well: https://web.extension.illinois.edu/fi..., https://extension2.missouri.edu/g5450, https://extension.sdstate.edu/choosin...