Map. Milk Supply of Boston

Map.  Milk Supply of Boston - The Farmers' Museum
Map. Milk Supply of Boston
Transparency, Lantern Slide. Handwritten label on slide states: "Maps. Milk Supply of Boston." Slide is from the Cornell University, Dept. of Dairy Industry and was part of an educational slide show. Image shows a map of New England with states and major cities marked. A box at the bottom right stays: "A Map of the Sources of Milk Supply of the Greater Boston. Places where Milk Cars start are Marked Thus. The Railroad over which Milk is Shipped." A key is then presented for Elm Farm Company, D. Whiting and Sons, Boston Dairy Co., G. Brigham Company, H. P. Hood and Co.
Physical dimensions: 
film size 3 1/4" x 4"