In 25 vols. and and 8-vol. supplement, Callisen’s great medical bibliography of writings by physicians, surgeons, obstetricians, pharmacists, and naturalists then living gives a complete view of the literature of the period from about 1780 to about 1830, describing over 99,000 items. As Garrison pointed out, it is one of the greatest bibliographical achievements of a single man. Reprinted, Nieuwkoop De Graaf, 1962-64.