Company Names, addresses, dates¹:
  J.E. O'Connor, [Saloon], 1230 7th St. NW, Washington DC (1904-1906)
  Patk O'Hanlon, [Saloon], 1230 7th St. NW, Washington DC (1907-1909)
  J.E. O'Connor, [Liquor Store], 11 Monroe St, Anacostia, Wash. DC (1907-1908)
  J.E. O'Connor, [Liquor Store], 11 Nichols Ave, Anacostia, Wash DC (1909-1910)
  O'Hanlon & O'Connor, [Saloon], 1357 Valley Pl SE, Anacostia, Wash. DC (1911-1915)
  J.E. O'Connor, [Saloon], 1942-4 14th St. NW, Washington DC (1916-1917)

Notes:
Jeremiah E. O'Connor (1874-1955)², a native of Ireland, was listed as a bartender in the 1903 Washington DC city directory. Starting in 1904 he was listed as owning his own salooon, located at 1230 7th Street NW. ¹

The 1907 city directory lists Patrick O'Hanlon as taking over the saloon at 1230 7th Street, and O'Connor owning a liquor store at 11 Monroe Street in Anacostia.

By 1911 both men had teamed up and opened the "O'Hanlon & O'Connor" Saloon in Anacostia. The business lasted until 1915, when O'Connor filed suit for a dissolution of the business, citiing irreconcilable differences. Besides the saloon, the pair also owned a "moving picture theater". ³
By 1916, the dissolution was granted, and O'Connor took over the saloon, under his name only.⁴

O'Connor continued to run the Saloon until 1917, after which time he became a clerk working for the government.⁵

The bottle below says "M B & G CO" on the base, which stands for the "Massillon Bottle & Glass Company", which operated from 1900-1904.

book # 452 This is a 9" aqua crown top bottle embossed: round slug plate: J.E. O'CONNER / ANACOSTIA, D.C. base: M B & G CO / 3 The bottle spells his last name with an "ER", but all the DC city directories spell his name with an "OR".