Richard L. Humphrey
- Fire-Resistant Construction of Buildings: An Informal Discussion. In: Transactions of the American Society of Civil Engineers, v. 65, n. 4 (Dezember 1909). (1909):
- Impurities in Sand for Concrete: An Informal Discussion. In: Transactions of the American Society of Civil Engineers, v. 65, n. 4 (Dezember 1909). (1909):