An inaugural dissertation on camphor submitted to the examination of the Rev. John Ewing, S.S.T.P. provost; the trustees & medical faculty of the University of Pennsylvania, on the 12th of May, 1797; for the degree of Doctor of Medicine - Church, John (Printed by John Thompson, of Philadelphia, 1797)
Austin, R.B. Early Amer. medical imprints, 464. - Evans, 31935