When it answered to the British-styled name Greenfield Chemist, you might have conceivably (if not privately) washed down your pills with a soda at the lunch counter. The old signage, on the wall that overlooks the Cortelyou Rd. station for the Q train, hasn't faded all that much over the years; the second, closeup, photo was taken in much brighter sunlight. Mr. Greenfield, I was told by a successor owner, retired in 1978, but it's unclear how soon afterward that the luncheonette was 86'ed.
Surviving signage for a luncheonette, 1526 Cortelyou Rd. (at East 16th St.), Ditmas Park, Brooklyn