Company Names, addresses, dates:
Buffalo Rock, Washington DC
Buffalo Rock doesn't show up in any Washington DC city directories. From the markings on the bottle below, it would appear they were based in Birmingham Alabama, and had some type of bottling operation in Washington DC.
The Buffalo Rock company is still in business today and claims to be the largest single-family privately owned Pepsi-Cola bottler. The bottle below may have held their Ginger Ale, which was their big seller in the 1920s. 1
book # 115
This is a 7.6" clear crown top bottle embossed:
front: Buffalo Rock / B.R. CO. / B'GHAM, ALA.
back: CONTENTS 6 1/2 FL. OZ.
base: WASHINGTON, D.C.