title: Charles Spencer (1813-1881), microscope maker.
authors.affiliation: Dittrick Museum of Medical History, Cleveland Health Sciences Library, OH 44106.
authors.forename: J M
authors.initials: JM
authors.lastname: Edmonson
mesh_terms: D049672:History, 19th Century; D008853:Microscopy / Q000266:history* / Q000295:instrumentation; D009144:Museums; D014481:United States