Company Names, addresses, dates:
  Prince William Pharmacy, 118 Center Street, Manassas VA

Notes:
The 9-Dec-1909 Manassas Journal has a description of the Prince William Pharmacy at 118 Center Street¹. Apparently the numbering on Center Street has changed, because that same building now has the address 9113 (see photos below).
Owners of the pharmacy included C.R.C. Johnson², R.M. Callis starting in 1935¹, and later George B. Cocke¹ who owned the pharmacy across the street from it.

Bottles:

This is a clear 3" (1/2-ounce) bottle embossed : horizontal: 1/2 vertical: PRINCE WILLIAM / PHARMACY / MANASSAS, VA

	This postcard, depicting the Prince William Pharmacy, was post-marked 1910. I don't know who any of the people in front of the drug store are.
	This photo (taken December 24, 2010) is of the building that housed the Prince William Pharmacy2. Compare it to the photo in the post card above. The original address was 118 Center Street1, although the numbering has changeds so that today it's 9113 Center Street.
	This postcard is post-marked 1914. The building on the right that says "POST OFFICE" above the door is the same building shown in the 2 photos above, so presumably it housed both the Post Office and the Prince William Pharmacy (to the left of the corner doorway).