The following information about Medical Practioners has been collected and compiled by Dorothy Falk.

Enforcing Medical Licensing in Illinois: 1877-1890 (external link) An article by Clinton Sandvick, Department of History, University of Oregon, Eugene, Oregon
Clinton County Medical Society Listing of members in 1876 and again in 1886.
Summary Report of the Board Cover page for the 1890 report of the Medical Board to the Governor of Illinois. Gives some interesting statistics.
Medical Personnel Detailed listing of medical personnel practicing in Clinton County in 1886, 1889 and 1895