A big thanks goes to AJ, a visitor and blogger at thingamababy.com , for referring us to the following.
www.shorpy.com is a seriously great site for those who enjoy historic photos.
Per the site:
By creating a free account on Shorpy you can share your own vintage photographs. Visitors to the site are particularly interested in images from the dawn of photography to the 1940s. Best of all, becoming a member is free!
I found some local photos by searching “Humboldt” and you may find others by using other local search terms/locations.
WARNING ! You may want to make sure you’ve got some time before you check it out, as you’ll want to stay awhile…