Company Names, addresses, dates:
  P-K Bottling Co, Washington DC

Notes:
The bottle below was patented by Peter E. Kekenes (see the patent image in the 2nd table below). I presume the "P-K Bottling Company" got it's name from Peter Kekenes's initials.
The bottle below has feint markings on the heel that say "3082E G26", which I'm told indicate the bottle was made in 1926. But the P-K Bottling Company does not show up in city directories that year or any other year. My guess is that it was a short venture of Peter Kekenes to expand his business, but it didn't seem to take.

Peter Elliot Kekenes
was born 1885 in Greece, came to America about 1902, and made his home in Savannah Georgia¹. In the early 1900s, he worked for the Savannah Brewing Company, and later the Chatham Bottling Company.²
According to city directories, Kekenes moved to Birmingham Alabama between 1924 and 1925 and started the Try-Me bottling company in that city⁴. About 1926 he opened up a Try-Me bottling Co. plant in Washington DC at 1345 Florida Avenue NE⁵.
By 1930 he had moved to Washington DC, where he lived out the rest of his life, as the president of the Try-Me bottling Company, until he died on Nov 18, 1953^5,3.
Timeline for Peter Kekenes from city directories:
  1907-1908 Savannah GA, occupation: Fruits
  1910           Savannah GA, occupation: Viva Bottling Works
  1911-1918 Savannah GA, occupation: Salesman Savannah Brew Co
  1919-1924 Savannah GA, occupation: Chatham Bottling Co
  1925-1929 Birmingham AL, occupation: Try-Me Beverage Co
  1930-1954 Washington DC, occupation: President Try-Me Beverage Co


Bottles:

book # 529 This is an 8" clear crown-top bottle with a spiraling-rope pattern, embossed: front: P-K BOTTLING CO back: MIN CONTENTS 6 FL. OZS. base: WASHINGTON / D.C.

This is a copy of the Patent for the bottle above. It's patent number D76,022, filed Nov 12, 1927, granted Aug 14, 1928.