This collection consists of the work of two Idaho photographers, George E. Tonkin and William Bach. The collection was given to the historical society by Mr. Bach.

The collection was divided between the two photographers: Box 1 - 10, George Tonkin: Box 1 - 8, negatives, gelatin dry plate Box 9 - 10, prints

Box 11 - 13, William Bach: Box 11 - 12, prints Box 13, negatives, acetate