Vintage Road maps Alberta and British Columbia Canada

Description

Very nice and clean older map of British Columbia and Alberta.  Undated.  Clue to date is that only US highways into Seattle are old 99 north and 10 east.  This should place the date somewhere in the 50's or before and some construction of the new interstate routes of 5 and 94 should have shown some activity by the late 50's.
Measures about 20 x 14.  Some slight creasing on cover and back and some panels.  No tears or holes.