Associated Factory Mutual Fire Insurance Companies. Rollstone Foundry, Inc., Foster Machine Company, Ten., Fitchburg, Mass. Boston, Mass.: Associated Factory Mutual Fire Insurance Companies, 1949. Original survey by G. C. Frost July 3, 1947. Additional data from A. F. Hoyt. Survey amended March 15, 1949. 1 sheet. Includes plan of buildings (with dimensions), elevation views of individual buildings (with functions of building floors and rooms), and surroundings. Also includes brief description of property, stock and product (iron castings and wood patterns), and existing water sources and fire protection resources. Lacks isometric view of buildings. "Rollstone Foundry, Inc." has been crossed out in title and "Improved Machinery Inc." written above it. Pencilled beneath index number: "Cancelled 6-12-64." Serial number 35373, replaces 34039. Index number 9579. Scale 1:600, 1 in. = 50 ft. 53 x 68 cm. (OCLC)