Company Names, addresses, dates:
  J.T. McCrum & Son, Lexington VA
  McCrum Drug Co, Lexington VA

Notes:
This web site describes James Thaddeus McCrum (b. 1834, d. 1897) as having owned McCrum's Drug Store in 1860, located in the Barclay Building on Main Street. It claims that said drug store continued in operation on Main Street for over 100 years.

Bottles:

(enlarge)	Sun colored amethyst 4.5" bottle embossed: horizontal: 3ii vertical: McCrum's / (McCRUM DRUG CO) / LEXINGTON, VA.
(enlarge)	Clear 5.5" bottle embossed: horizontal: 3iv vertical: McCrum's / (McCRUM DRUG CO) / LEXINGTON, VA.
(enlarge)	Clear 4.5" bottle embossed: vertical: J.T. McCrum & Sons / DRUGGISTS / LEXINGTON, VA. bottom: W T & CO / D / U S A
(enlarge)	Clear 3.5" bottle embossed: vertical: J.T. McCrum & Son / LEXINGTON, VA. bottom: PAT JUN 17 88 / ???
(enlarge)	Clear 5.7" bottle embossed: horizontal: 3iv vertical in script: The McCrum / Pharmacy bottom: W T Co This bottle does not say "Lexington" on it, but I suspect it's from the same McCrum drug company in Lexington as the rest of the bottles on this page.