Hi Mike,

I think what you're looking for is the Canadian National Topographic System (NTS) grid, which sections Canada according to those alpha-numeric designations.

https://www.nrcan.gc.ca/earth-sciences/geography/topographic-information/maps/national-topographic-system-maps/9767


+Evan
 
Evan Thornberry
GIS Librarian
University of British Columbia Library 
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On 2020-06-17, 9:01 AM, "Maps-L: Map Librarians, etc. on behalf of Mike Flannigan" <[log in to unmask] on behalf of [log in to unmask]> wrote:

    I have a question about Canada topographic map
    designations.  Oak Lake (1:164.042 scale) in CN has
    a designation of 52 K/5 or 52K05.  I want to know what
    that designation is called.  I think it is not the
    Military Grid Reference System (MGRS), but military
    people use that designation whatever it is called.
    
    
    Mike