Berson Brothers, Inc.

In 1911, the Standard Oil Co. of New Jersey lost an antitrust case brought by the US Government.

After it was split into 34 companies, Standard Oil of New Jersey sold products under the Esso brand, derived phonetically from the initials ("S. O.").

In many parts of the country, other former Standard Oil companies objected to the use of this name, and their products sold under the Enco brand instead.

Based on the ad, Berson would have received gasoline and fuel oil. These would usually have been in black UTLX tank cars.

The Jeddo-Highland anthracite mines and breakers were located in Pennsylvania and served by the Lehigh Valley Railroad. 

Coke is made by burning bituminous coal without oxygen, yielding near pure carbon. It's basically the same process as making charcoal from wood.

Koppers was a national brand based in Pittsburgh. Because of the nature of the commodity, they must have licensed their brand. Koppers Connecticut Coke was produced in New Haven, and later changed its name and brand to Connecticut Coke.