Henry Christmas

Essay on the origin and progress of Animal Magnetism

Edward Mammatt, The Analyst: A Quarterly Journal of Science, Literature, Natural History and the Fine Arts, Vol. X, Simpkin, Marshall & Co., London 1840, pp. 464-483.

Henry Christmas

The cradle of the twin giants, science and history

Vol. 1, Richard Bentley, London 1849.

Henry Christmas

The cradle of the twin giants, science and history

Vol. 2, Richard Bentley, London 1849.