With descriptions added to the back of the photograph:
1) in Hanns Weltzel's hand:
Lotte Unku Thormann Sippe

2) in Hanns Weltzel's hand:
Lotte Thormann  Unku Thormann

3) in likely to be Klara Weltzel's hand:
Weltzel seine Frau 


Depicted in this photograph are:
Klara Weltzel (left); Pauline Thormann (centre); Erna Lauenburger (right)

Please refer to the table in GLS Add. GA 3 for additional details on these individuals, along with alternative names and spellings with which they may be identified.