H. H. Campbell
- The Physical Qualities of Acid Open-Hearth Nickel Steel, As Compared With Carbon Steel of Similar Tensile Strength. Dans: Transactions of the American Society of Civil Engineers, v. 34, n. 2 ( 1895). (1895):
- Specifications for Structural Steel. Dans: Transactions of the American Society of Civil Engineers, v. 33, n. 1 ( 1895). (1895):