"Carrie (or Cassie), Nellie, Sam w/ Samuel, Mrs. Smith". The pen was smearing badly which is probably why you were having trouble reading it. I don't see any surnames on this other than "Smith" unfortunately, which is probably why it got donated. My grandfather was like that - since he knew who was in the photos he didn't see why he should bother labeling them.
I am interested in the last names Pinna, Benning, Kroetsch, Finazzo, and Kroetch. My family pays a lot of attention to the past which heavily influenced us to start AncientFaces.
I love antique photographs. In addition to sharing old photos of my family, I am also going through my collection of "antique store people". They've been sitting in a storage tub in my back room much too long and maybe some of their families will be able to find them here.
If I'm able to identify the people in the photo, I upload it not only to AncientFaces, but also to Ancestry, FamilySearch, and Find-A-Grave. If the person in the picture is a military veteran, the photo also goes on Fold3. I figure that the more places I upload these pictures, the greater the chance that a relative will be able to find them.