Title | Date | Type | ||
---|---|---|---|---|
1 | Hercules Powder Company | 1918-07-15 | Image | |
2 | Hercules Powder Company | 1918-07-15 | Image | |
3 | Hercules Powder Company | 1918-07-15 | Image | |
4 | Hercules Powder Company Interior, Powder Barrels | 1918-07-15 | Image | |
5 | Portland Cement Company, Steam from Cement Hoppers | 1918-07-15 | Image | |
6 | Portland Cement Company, Steam from Cement Hoppers | 1918-07-15 | Image |