Colby, B. (1940). A guide to health: Being an exposition of the principles of the Thomsonian System of Practice and their mode of application in the cure of every form of disease; embracing a concise view of the various theories of ancient and modern practice. Hammond: Hammond Book Company.

Colby, Benjamin. A Guide to Health: Being an Exposition of the Principles of the Thomsonian System of Practice and Their Mode of Application in the Cure of Every Form of Disease; Embracing a Concise View of the Various Theories of Ancient and Modern Practice. Hammond: Hammond Book Company, 1940.

Colby, Benjamin. A Guide to Health: Being an Exposition of the Principles of the Thomsonian System of Practice and Their Mode of Application in the Cure of Every Form of Disease; Embracing a Concise View of the Various Theories of Ancient and Modern Practice. Hammond: Hammond Book Company, 1940.