The easy ones to figure out have already been posted. Here are a few more that I have tried to decipher.
Here is another picture that was labelled with only Wise on the back. It was taken in Winona, Minnesota, which makes it unusual.
Another picture which I think I have figured out is below.This was taken by a photographer in Boone, Iowa. The only Langford family to reside in Boone were descendants of Jane Langford and Merritt Allen. Their daughter Mary married MJ Mann and had several children.
This I believe is their son, Harry Mann. He can be found living in Boone from 1910 or earlier until 1940.
And the three pictures below were all taken in Clinton or Lyons, Iowa. They are almost certainly relations of the Langfords in some way.