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Cover Description: Blue background with White Star and Mobil Gas logo.  Title is across the bottom.
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Note: Lithographed in the USA.  Unfortunately I don't have this map in my collection yet - however the scan of the cover has been provided to me by Richard Horwitz as a temporary reference to the map produced.  Hopefully in the future, I will be able to provide more details of this map.  

1933Cover
From Richard:
White Star was a Detroit company that also marketed in Western Ontario. Vacuum Oil (later Mobil) bought it in 1930 and added the Mobilgas logo. This map says "Ontario" on the cover but is actually only the south-western part, from Windsor to east of Toronto