- Repository:
- Washington and Lee University, University Library Special Collections and Archives
- Published:
- unknown
• | Iron | (3) |
• | Aqueducts | (1) |
• | Canal aqueducts | (1) |
• | Canals | (1) |
• | Cast-iron | (1) |
• | Cement | (1) |
• | Coal | (1) |
• | Coal mines and mining | (1) |
• | Concrete | (1) |
• | Covered bridges | (1) |