Favorite this☆ Swift and Co. Salt Block in Delray about 1900 Description: Industrial building with tall smokestack. Mat was later painted blue. Handwritten on mat front: "A-2." Typed on label on mat front: "Swift and Co. Salt Block about 1900 / between Edison and Solvay." Handwritten on back: "Swift & Co. Block ca. 1900." Details Resource ID: DPA0145 Subject: Factories--Michigan--Detroit Salt industry and trade--Michigan--Detroit Albumen prints Photographic prints Date Issued: 1900 (year approximate) Format: 1 photographic print mounted on mat board ; image 4 x 6.75 in. Member of: Burton Historical Collection Filing Location: M/Localities-Delray-Industries and Business Houses Rights: Physical rights are retained by DPL. Copyright is retained in accordance with U.S. copyright laws.