Narrow Results By
- Engler, Bruno 142
- Vaux family (Philadelphia USA) 129
- [Mary Schaffer] 107
- Whyte, Catharine 79
- [Byron Harmon] 79
- Department of the Interior, Natural Resources Intelligence Branch 73
- Alpine Club of Canada 34
- Gadd, Ben 34
- Whyte, Peter 27
- Hay, Murray 23
- Mary M. Vaux (Philadelphia USA) 23
- Includes undated items 22