The picture windows of the Cortelyou Road station window are placed directly over the tracks, which used to be part of asteam railroad conecting Prospect Park and Coney Island.
Through it, we see “DRUGS” and “SODA” signs, which are a small part of a large painted sign on the side of the old GREENFIELD THE CHEMIST building. In Britain, ‘chemist’ means pharmacist, and the word is used for quaint effect here.