Thanks for posting that photo. Cool old country store / gas station. Amazing that the sign is still intact.

That logo represents Naph-Sol Refinery of Michigan. I don't know their current status, but I believe they are no longer around.

I collect the Zephyr made by JD Streett of St. Louis. They are still very much in business, but no longer using the Zephyr brand. Their current signage for unbranded gas stations supplied by them feature "ZX" or "Z Xpress" as the brand.



http://www.jdstreett.com/products


Jim "Oldgas" Potts
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