Company Names, addresses, dates:¹
  Leonard T. Marston, 423 S Pine St., Richmond VA (1898-1899)
  Leonard T. Marston, 433 S Pine St., Richmond VA (1900-1908)

Notes:
Leonard Temple Marston was born May 31, 1869, and died Jun 25, 1955².
Marston was a clerk for the Bodeker Brothers drug store in the early 1890's. By 1897 he had started his own drug store at 433 S. Pine Street. I didn't see any evidence in the Richmond Directories that he was at 423 Pine Street as Vernon Grant's book suggests. I don't know what became of his drug store at 433 Pine, but in later years he went back to being a clerk for other drug stores again³.

Bottles:

Clear 3.5" bottle embossed: vertical: L. T. MARSTON / DRUGGIST / RICHMOND, VA. base: B.R.G. Co.