Dr. Chapman’s Spinal Ice-Bags

1873 advertisement for John Chapman's spinal ice bag treatment. Source: Internet Archive/Open Knowledge Commons/Harvard Medical School, http://archive.org/details/casesofneuralgia00chap.

1873 advertisement for John Chapman’s spinal ice bag treatment. Source: Internet Archive/Open Knowledge Commons/Harvard Medical School, http://archive.org/details/casesofneuralgia00chap.