References
References
Foster
Artifact information, Item # 780717. Catalogue # 1978.0717.001. Canadian Science and Technology Museum.
Association of Ontario Land Surveyors. Annual Report of the Association of Ontario Land Surveyors and Proceedings of the Thirtieth Annual Meeting Since Incorporation. By Association of Ontario Land Surveyors. Canada: 1922.
Brooks, Randall C., and William J. Daniels. “Surveying Instrument Makers of Central Canada.” Canadian Journal of Civil Engineering 26.6 (1993): 1037-1046.
Gillespie, W.M. A Treatise on Land-Surveying. New York: D. Appleton & Co., 1865.
Johnson, C.E. The Theory and Practice of Surveying. New York: John Wiley & Sons, 1889.
Charles Pelham Mulvany, Graeme Mercer Adam, Christopher Blackett Robinson. History of Toronto and County of York, Ontario: Biographical Notices. Toronto: Robinson, C.B., 1885.
Smith, Julian A. “Charles Potter, Optician and Instrument Maker.” Journal of the Royal Astronomical Society of Canada 87.1 (Feb., 1993): 1993.
Topley Series B. “McLatchie, John.” February, 1879, Ottawa. Photograph by William James Topley. Library and Archives Canada, accession number 1936-270 NPC, item number 32334, MIKAN number 34721000.
Toronto Seat of Government Photographic Portfolio. “King Street West (King St. East, south side looking West).” 1856, Toronto. Photograph by Armstrong, Beere & Hime. Library and Archives Canada, accession number 1992-605 NPC, item number 6, MIKAN number 3518382.
University of Toronto. Papers: Issues 2-6. Toronto: Engineering Society of the School of Practical Science, January 1, 1888.
Smith, Julian A. “Charles Potter, Optician and Instrument Maker.” Journal of the Royal Astronomical Society of Canada 87.1 (Feb., 1993): 1993.
Turner, Gerard L'E. Nineteenth-Century Scientific Instruments. Los Angeles: University of California Press, 1983.
Hearn
1871 and 1881 censuses, Library and Archives Canada, https://www.bac-lac.gc.ca/eng/census/Pages/census.aspx.
Brooks, Randall C. and William J. Daniels. “Surveying instrument makers of Canada.” Canadian Journal of Civil Engineering 20 (1993): 1037-1046. https://www.nrcresearchpress.com/doi/pdf/10.1139/l93-134
Canada Science and Technology Museum files for item 1978.0971.001
“Invention and Introduction of the Engineer’s Transit,” from The Engineering News September 15, 1875. Engineering News Record Volumes 1-2 accessible via Google Books.
Mackay’s Montreal Directory for 1863-64, https://archive.org/details/cihm_36986
Pike, Benjamin. Pike's Illustrated Catalogue of Scientific and Medical Instruments. Norman Publishing, 1856.
Public Accounts of the Dominion of Canada for the Fiscal Year Ended 30th June, 1870. Ottawa: L.B. Taylor, 1871. Accessible via Google Books.
“Transit.” Smithsonian National Museum of American History, https://amhistory.si.edu/surveying/type.cfm?typeid=20
Turner, Gerald L'Estrange. Nineteenth-Century Scientific Instruments. Berkeley: University of California Press, 1983.
Wilson, Robert G. “Hearn & Potter, Toronto Opticians, and their Succeeding Companies,” The Magic Lantern Gazette 14 no. 2 (2002): 11-15. https://library.sdsu.edu/pdf/scua/ML_Gazette/MLGvol14no02.pdf
Crabtree
Archive.org
https://archive.org/stream/uoftreportgov1944univ/uoftreportgov1944univ_djvu.txt
https://www.archive.org/stream/n01ontariosession65ontauoft/n01ontariosession65ontauoft_djvu.txt?keepThis=true&TB_iframe=true
MARCH 4
Smithsonian Online
https://americanhistory.si.edu/collections/search/object/nmah_690215
Individual Collections
https://www.mathsinstruments.me.uk/page39.html
Royal Museum Greenwich
https://collections.rmg.co.uk/collections/objects/42814.html