New-York Daily Tribune
“Physical Education” · 1845“Physical Education and the Preservation of Health, by John C. Warren. [footnote] [...] 'No,' says Dr.”
Fuller, Margaret. Life Without and Life Within; or, Reviews, Narratives, Essays, and Poems. Edited by Arthur B. Fuller. Boston: Brown, Taggard and Chase, 1860. · p116
The footnote at lines 4676-4677 explicitly names "Physical Education and the Preservation of Health, by John C. Warren." Warren (1778–1856) was a prominent Harvard Medical School surgeon.