You may also wish to search for items by Belknap, R. and Belknap.
Only one matching reference was found.
Belknap, R.C.; Weber, J.H., Vapor-Liquid Equilibrium at Atmospheric Pressure. Systems Containing Ethyl Alcohol, n-Hexane, Benzene, and Methylcyclopentane, J. Chem. Eng. Data, 1961, 6, 485. [all data]