Charles S. Churchill
- Unit Costs of Work in Progress. Dans: Transactions of the American Society of Civil Engineers, v. 49, n. 3 (décembre 1902). (1902):
- Ventilation of Tunnels. Dans: Transactions of the American Society of Civil Engineers, v. 54, n. 5 ( 1905). (1905):
- The Ventilation of Tunnels. Dans: Transactions of the American Society of Civil Engineers, v. 57, n. 2 (décembre 1906). (1906):