EN-AR-CO Map of Colorado - White Rose Gasoline - National Refining Co. - 1930's

Description

The front of this old map says:
EN-AR-CO MAP
Colorado
Wherever You Go
EN-AR-CO Motor Oil
Safety First!
Don't Run
Others Down
White Rose Gasoline
Look For This Sign
Compliments of
The National Refining Co.
The back of the map says:
No Extra Cost--
WHITE ROSE GASOLINE
WHITE ROSE ETHYL
Fill Up At The Sign Of The Boy And Slate
Other ads are for EN-AR-CO Motor Oil and EN-AR-CO PENN Motor Oil.
I cannot find a date on the map, but the population figures are from the 1930 census.  It was in a box of maps from the 1920's and 1930's.
It is in fairly good condition for its age.  There are pin holes and small tears at the folds.
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