1. Baking demonstration in laboratory Collection: Human Ecology Historical Photographs Set: Departments and Divisions Food and Nutrition Date: 1917 Format: Image Photographer: Troy, J. P. (John Patrick)
2. Baking demonstration in laboratory Collection: Human Ecology Historical Photographs Set: Departments and Divisions Food and Nutrition Date: 1917 Format: Image Photographer: Troy, J. P. (John Patrick)
