Unfortunately, a significant number of photos are of persons unknown to any of us living relatives. The vast majority were taken before 1911, and of those 20% come from what I've called the "Small Album," an album built to hold cartes de visites, the small albumen prints mounted on thick and stiff 2-1/8" x 3-1/2" (54.0 mm x 89 mm) cards. The Small Album likely was assembled by Lizzie Keys in the 1870s and 1880s, made up of several of her Keys and Beebe relatives (a significant fact suggesting it is Lizzie's, in addition to its inheritance via her daughters, is that the very first photo in the album is of her father, Horatio Nelson Keys). The unknown photographs are most likely friends and children of friends, except for a number that appear to be children in two cities where she lived and may have student-taught (Bloomington, Illinois) and then in Cleveland, where she taught school for nearly six years.
Included among the "unknowns" are a significant number of photos from the 19th century, probably the 1870s through 1890s, although some tintypes may date even to the 1860s. These are priceless family photos for someone -- we just don't know for whom. Another notable subset are photos of pretty young women Bion Bates (my grandfather) took or collected -- starting with "Photo 013-Bion" -- he apparently had an eye for the ladies before courting my grandmother.
See the entire collection.