1. Thoughts on the true mode of improving the condition of man Author(s): Caldwell, Charles, 1772-1853 Publication: Lexington, Ky. : Printed by H. Savary & Co., 1833 Subject(s): Health BehaviorMental ProcessesHeredity
2. Production of vital force: a discourse delivered before the Massachusetts Medical Society at their annual meeting, May 30, 1849 Author(s): Jarvis, Edward, 1803-1884 Publication: Boston : Printed by David Clapp, 1849 Subject(s): HealthHealth BehaviorMortality