Below I include scans from some items in my collection showing some records kept by doctors in New England in the mid-1800s. The documents give some ideas for prices for drugs and prescriptions written,
Boston - 1833 - a document of items a doctor (or citizen?) purchased for his practice: ginger, peppermint, oil of Spruce, etc.
A two-page document dated 1868 from Dr. George Brown of Barre, Massachusetts, with a signed revenue stamp affixed by his autograph on the second page. The goods were purchased from J. D. Wadsworth, a know druggist in the Boston area. Dr. George Brown was superintendent of the "Private Institution for Feeble-Minded Youth" in Barre.
Four pages of a doctors log from the 1840s with dozens of drugs listed that were given out over a period of time.
A receipt given to Dr. Josiah Graves, MD for his costs of visits to tend to the sick., 1874 from Nashua, N.H.