Company Names, addresses, dates¹:
  Mt Vernon Bottling Co, 2109 10th Street NW, Washington DC (1941-1965)

Notes:
The Mount Vernon Bottling Company appears in city directories from 1941-1965.¹
A 1946 newspaper article lists Stephen D. Lefas as the owner². Lefas was the owner of the Columbia Bottling Works from c.1920 to 1940. The fact that the Columbia Bottling works dissappears from city directories after 1940 and the Mt Vernon Bottling Co appears in 1941 makes me suspect that Lefas was the original owner of the Mt Vernon Bottling Co in 1941.
In October 1949 the company was put up for auction. Some of the items listed include: Miller Hydro soaker, Burns and Dixing filling machines, liquid carbonator, syrup mixers, 25-gal crock, stainless steel strainer, hand trucks, bottles, safes, filing cabinet, desks, fan, typewriter, adding machine, and a check writer.³
After being sold, the company kept the same name & stayed at the same location according to the city directories. In 1959, Andrew G. Kavounis (listed on a business card depicted on this website) was described as an "official of the bottling company" in an article about how $400 was stolen from their safe, where the suspect was quickly caught because he had typed his name into the office typewriter during the robery⁴.
In Jul of 1964, the building at 2109 10th Street NW burned down. Andrew G. Kavounis and his brother Alex were listed as "co-owners" of the company at that time.⁵
From 1952 to 1963, the company was actually listed in the city directories as "O-SO Good, Mt Vernon Bottling Co". O-SO seems to be a name that they used on some of their sodas, such as "O-So Grape Soda".


Bottles:

	book # 424 This is an 8.75" clear crown top bottle with a checkerboard pattern, embossed: front: MT. VERNON / BEVERAGES / WASHINGTON, D.C. back: MT. VERNON / BEVERAGES / CONTENTS 7 FLU. OZ base: 3 5 7 B 8
	book # 425 This is a 9.6" clear crown top bottle with a with emobssing as well as blue on white Applied Color Label (ACL). Front & rear views are shown, and they say: embossed on both shoulders: MT. / VERNON front ACL: (picture of George Washington's Mount Vernon Home) / Mt. Vernon Club / Product / CONTENTS 12 FL. OZ. rear ACL: MTV / CONTAINS / FILTERED CARBONATED / WATER, CANE SUGAR / FLAVOR, CITRIC ACID / AND CERTIFIED COLOR / BOTTLED BY / MT. VERNON / BOTTLING CO., INC. / WASHINGTON, D.C. embossed on base: 2724 / E (T logo) 50 / I
	book # (unlisted) This is a 7.9" clear crown top bottle. It is stipled, and it has an orange & black applied color label (ACL). Front & rear views are shown, and the rear view has styrofoam balls inside to make the label clearer. The labels say: front orange/black ACL: Mt. Vernon / Club / Product / CONTENTS 12 FL. OZ. rear orange ACL: MT. VERNON / BOTTLING CO / WASHINGTON, D.C. embossed on base: 440 B 40
	book # (unlisted) This is a 9.6" clear crown top bottle with a red & white applied color label (ACL). Front & rear views are shown. The labels say: front & back shoulders: O-SO good front: THE TASTE TELLS / O-So / TRADE MARK REG. / BEVERAGES / COMPARE THE FLAVOR rear: O-SO BEVERAGES / ROCONGNIZED / FOR / QUALITY / BOTTLED UNDER LICENSE OF / O-SO GRAPE COMPANY / CHICAGO, ILL. PROPERTY OF / MT. VERNON BOTTLING CO. WASH. D.C. / O-SO REFRESHING embossed on base: CONTENTS 10 FL OZ ...
	book # (unlisted) This is an 11.5" green crown top bottle embossed: both shoulders: Mt. Vernon Club front heel: WASHINGTON, D.C. rear heel: MIN. CONTENTS 1 PT. 8 OZS.

	This is a crown cork bottle-cap with black letters on a cream colored background that says: front: MT. VERNON BOTTLING CO. / Mt. Vernon / PALE DRY / MIN. CONT. 6 OZ / WASHINGTON, D.C.
	This is a business card for someon who worked at the Mt. Vernon bottling company. It says: front: ADAMS 2-4050 / Mt. Venon Bottling Company, Inc. / O-SO-GOOD BEVERAGES / ANDREW G. KAVOUNIS / 2109 10TH STREET, N.W. / WASHINGTON 1, D.C. rear in blue ink: O-So Good! / O-So BEVERAGES (picture of a six-pack of iO-So beverage bottles)
	This is a colorful label for Mt Vernon Club Ginger Ale. It says: label: Mt. Vernon Club / (picture of George Washington's Mount Vernon home) / GOLDEN / GINGER ALE / MT. VENON BOTTLING COMPANY / WASHINGTON, D.C.