As far as the eye can see: ophthalmology in the Historical Collections of the Library of the College of Physicians of Philadelphia.
Horrocks
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D001868:Book Collecting / Q000266:history; D049670:History, 17th Century; D049671:History, 18th Century; D049672:History, 19th Century; D049673:History, 20th Century; D049691:History, Medieval; D006801:Humans; D007993:Libraries, Medical / Q000266:history*; D008374:Manuscripts, Medical as Topic; D008488:Medical Illustration / Q000266:history; D009885:Ophthalmology / Q000266:history*; D015143:Philadelphia; D012955:Societies, Medical / Q000266:history*