John Rock lecture on Race

Historic and Scientific Lecture by Dr. Rock Our colored fellow-citizen, Dr. J. S. Rock, will deliver a lecture upon the Races in General, the Caucasian and African in Particular, in the Melonian Hall, on Tuesday evening, Jan. 8th, at 7 1-2 o’clock. Admission ticket ,25 cents. Hear him!
(Liberator, Jan 4, 1856, pg 2)