Company Names, addresses, dates: ¹
  John L. Hagan's Pharmacy, Jefferson & Five Forks, Danville VA (c.1890s)
  Central Pharmacy, 260 Jefferson Street, Danville VA (c.1900-c.1931)
  Central Service Store, 258 Jefferson Street, Danville VA (c.1935-c.1943)
  Central Drug Store, 125 N Union Street, Danville VA (c.1937-1960+)

Notes:
John Lyle Hagan (1860-1930) was a druggist in Danville, VA².
The 1892 Danville City Directory lists the John L. Hagan drug store at Jefferson & Five Forks. The 1902 City Directory lists the Central Pharmacy at 260 Jefferson Street, and it has the name "John L. Hagan" in parenthesis, presumably to indicate that he was the owner or proprietor of that drug store. His name was also listed in parenthesis in the 1904 directory.
Hagan died in September of 1930, and the 1931 city directory was the last one to list the Central Pharmacy, but subsequent years listed a "Central Service Store" and "Central Drug Co", which may or may not have been affiliated with the original Central Pharmacy. The Central Drug Co was listed up to the 1960 directory, and I have not searched any directories after that one, so I don't know what year it closed down.
Most of the bottles below do not say "Danville" on them, but I beleive they are all from the same John L. Hagan in Danville VA.
More information about Danville drug stores is available at rdricketts blog.

	This 6.25" bottle is partially amber colored (it's not stained - that's the color of the glass). It may have been made when the glasshouse was transitioning from amber glass to clear glass. It is embossed: vertical in script in slugplate: John L. Hagan's / Pharmacy
	This is a 5.3" (4-ounce) amber bottle embossed in a slugplate: horizontal: 3iv vertical in script: John L. Hagan's / Pharmacy
	These are very similar to the bottle above, except the lip is distinctly different. They are clear, 5.25", 4.75", 4.25", and 3.5" tall, and embossed: vertical in script on slugplate: John L. Hagan's / Pharmacy base (left bottle) : W T CO / B / USA / PAT JAN 18 98 base (middle bottles): W T CO / C / USA base (right bottle) : W T CO / B USA / PAT JAN 18 98
	These are different from the bottles above in that they have a ridge on the shoulder. They are clear 7.3", 6.4", and 5.8" bottles embossed: vertical in script on slugplate: John L. Hagan's / Pharmacy base: W T CO / A (or 'B') / USA
	These have the same embossing & shape as the bottles above - just shorter. They are clear 5.3", 4.7", and 3.7" bottles embossed: vertical in script on slugplate: John L. Hagan's / Pharmacy base: W T CO / A / USA
	This bottle doesn't have a ridge on the shoulder, but it does have a collar below the lip, so it's slightly different from all the bottles above. It's a clear 4.75" BIM tall bottle embossed: vertical in script on slugplate: John L. Hagan's / Pharmacy base: W T CO / C / USA
	It is a clear 2.75" (1/2 oz) bottle embossed: horizontal: 3 1/2 vertical in script on slugplate: Jno. L. Hagan's / Pharmacy
	This is one of the few bottles on this page that actually says "Danville VA" on it. It is a clear 5" (4 oz) bottle embossed: horizontal: 3 iv vertical in script on slugplate: Jno. L. Hagan's / Pharmacy / Danville, Va

This is the only bottle on this page that says "Central Pharmacy". It is a clear, 4.3" tall BIM bottle embossed: vertical in slugplate: CENTRAL PHARMACY / J.L. HAGAN PROP'R. / DANVILLE, VA. base: W.T.&Co. / C / U.S.A. / PAT JAN 5, 1892

This picture was taken from Google in September 2019. It shows the building at 260 Jefferson Street, so it presumably was the building that housed Hagan's Central Pharmacy.