Imagine that you have access to the digitized collections from over 100+ University systems. What would that look like? It would look like HathiTrust. Sure, it's scholarly. There are millions - millions! - of digitized books, pamphlets, papers, and primary sources from ancient times to today. Pick up something here to entice some great class conversations. I searched for "sourdough bread" and discovered over 5,000 entries - including many diaries of gold hunting in the Klondike as well as agricultural reports.
Imagine searching for your favorite subject!
Check out: electric sheep - military manual collection - NASA images - classic TV - Comic books and so. much. more.
Use their primary source collections (Stonewall, Mormon Migration, Sherman Alexie, World War I and more). Check out EXHIBITS to get access to more primary sources put together by theme or topic.
Look at this list of National Park Service designated Antiquities. Research any one of them and you'll find stories of terror, uniqueness, and incredible beauty.
click on the image of Bumpass Hell: