R. D. Coombs
- Round-House Framing. In: Transactions of the American Society of Civil Engineers, v. 55, n. 2 (Dezember 1905). (1905):
- Overhead Construction for High-Tension Electric Traction or Transmission. In: Transactions of the American Society of Civil Engineers, v. 60, n. 1 (Juni 1908). (1908):