Cameron, John L. photographic assistant creator mixed material monographic eng Pocket diary of Cameron kept while working for Civil War photographer Alexander Gardner. Subjects include early photographic studio practices, chemical recipes, and processes. Also documents Cameron's study and career as a violinist. Open to research. Photographic assistant and violinist. Collection material in English. Gardner, Alexander 1821-1882 Photographic chemicals Photography Photography Processing Photography Studios and dark rooms Violin Instruction and study Violin Performance United States History Civil War, 1861-1865 Photography Photographic assistants Violinists mm2007085378 Open to research. DLC 070718 20260227111731.0 mm2007085378