I recently purchased a c. 1930 Texas map from Simms Oil Company, Dallas, Texas. I grew up in Dallas and I've never heard of Simms Oil Company. They used a triangle logo with the point down with Simms across the triangle. The map shows three examples with Gas, Oil, or Lube under the name Simms on each example. One of the Gas examples shows an enormous set of wings in a V from the triangle with Red Wing written between the wings.
Colors are red on a white background.
I've never heard of Simms Oil Company.