Company Names, addresses, dates: ¹
  P.R. Jones, 408 Main Street, Danville VA (c.1881-c.1892)
  P.R. Jones Sons, 408 Main Street, Danville VA (c.1902-c.1908)
  Jones Temple Pharmacy, 433 Main (Masonic Temple), Danville VA (c.1908)

Notes:
The dates and addresses shown above are from a limited number of Danville City directories, with lots of gaps in the years, so I don't know the exact dates when things changed. There were multiple members of the Jones family running those drug stores.

Pleasant Richard Jones (1840-1899)² was likely the first Jones family member to run a drug store in Danville. rdricketts blog shows that there was a Danville bottle embossed with "P R Jones".
The 1910 US Census lists his 2 sons, William H. Jones (1872-1935)³ and Pleasant Richard Jones Jr. (1874-1911)⁴ as druggists, with William as the employer and Pleasant Jr as a worker. The 1902-1908 city directories refer to the drug store as "P.R. Jones' Sons", although the residential section also refers to it as "William H Jones & Co" during some of those years.
The 1908 city directory lists a second Jones drug store, the "Jones' Temple Pharmacy" at 433 Main street. I don't have access to any city directories between 1908 and 1917, so the Jones drug stores apparently went out of business sometime between those 2 years.

Note that there was also a Jones Drug Store in nearby Schoolfield, which was run by Ebbert Ashby Jones. I have not found any evidence that he was related to the Jones family members listed above. The Schoolfield drugstore was only about 1 mile away from the Danville drugstore locations described above.

More information about Danville drug stores is available at rdricketts blog.

Bottles:

These are clear 4.3" (2 oz) & 3.7" (1 oz) bottles embossed: horizontal: 3ii (or 3i) / Jones vertical: DRUGGIST / DANVILLE, VA. base (left bottle): W T CO / B / U S A base (right bottle): W T CO / A / U S A

	This postcard is postmarked 1908, and it depicts the Masonic Temple that was built in 1920 and burned down in 1920. The lower right portion of the temple that has a sign that says "JONES TEMPLE PHARMACY". According to rdricketts blog, that location used to be Henry A. Wiseman's , Temple Pharmacy, until it was sold to P.R. Jones and sons about 1905.
	This is a snippet from an 1894 Sanborn Fire Insurance map, showing the drugstore at address 433 Main Street. This address was part of the Masonic Temple, shown in the postcard above.
	This is a snippet from an 1894 Sanborn Fire Insurance map, showing the drugstore at address 408 Main Street.