The East Coast had Esso gas stations. For those who don't know, Esso stood for the letters "SO," as this was formerly the Standard Oil Company of New Jersey. In California, Texas, Michigan, and even Florida (isn't that on the East Coast?), as well as some other places, we had Enco. It was the same Humble Refining Company that owned it. Actually, I found out that the company was not allowed to use the Esso name in certain jurisdictions, so they used Enco.
What did the name stand for? Who knows?
Enco, like Esso, had the free road maps that folded differently than any other gas station. I used to collect maps like that. It was neat. I had hundreds. Today kids have to buy those things!
I do remember that in 1969 the Enco acquired the Signal gasoline company. There was a service station in my neighborhood owned by a man named Elso. He owned a Signal gas station located in front of Jay's Country Boy Market. As a Signal retailer, it was simply, "Elso's Service." When the company became Enco, the station was now Elso's Enco. Cute. A few years later, when Enco became Exxon, the station became Elso's Exxon.
But, even that gas station is gone. It was bulldozed to make a bigger parking lot for Jay's Country Boy. And now, even Jay's Country Boy is gone.