Company Names, addresses, dates:
  Patterson's Pharmacy, Round Hill VA

Notes:
James Samuel Patterson (1892-1985)¹ was the proprietor of a drug store in Round Hill, VA.
His World War I draft card listed him as a druggist in Round Hill in 1917², and the 1930 & 1940 US Census also lists him as a druggist in Round Hill. So the years of operation of his Round Hill drug store were from sometime on-or-before 1917 to sometime on-or-after 1940.

I don't think this Patterson pharmacy was affiliated with the Patterson Drug Co chain of drug stores started in Lynchburg VA, because the label on the bottle says "Patterson Pharmacy" and not "Patterson Drug Co". Also I could not find a link between Samuel Patterson of Round Hill and Charles Patterson of Lynchburg, so I assume they just happened to have the same last name.

Bottles:

(front)

(side)

This is a clear, 9" unembossed bottle with a label that says: label: Tr. Iron Citrochlor / PATTERSON'S PHARMACY / J.S. PATTERSON PROP. / Phone Purcellville 4081 ROUND HILL, VA.