Item 5774 - 108 mm shell casings at the Portland Company, ca. 1917 Item 5774 - 108 mm shell casings at the Portland Company, ca. 1917 Contributed by Maine Historical Society Item 5774 Zoom 4230px x 3206px - 14.1"w x 10.7"h @ 300dpi | Need a larger size? *Credit line must read: Collections of Maine Historical Society Image Info The Portland Company produced the most 108 mm shell casings per man, with fewer rejects, of any company during the first World War. Show Details