The USDA National Agriculture Library has a bunch of cool digital exhibits: https://www.nal.usda.gov/collections/exhibits

They also host free webinars about food, agriculture, and ecology.

If you’re in Beltsville, Maryland, you can visit and see the collections in person: https://specialcollections.nal.usda.gov/visit-special-collec...

Also, their building, the Lincoln Building, is really cool architecturally: https://en.m.wikipedia.org/wiki/United_States_National_Agric...