In less than four months in 1872, in what was later known as "The Cleveland Conquest" or "The Cleveland Massacre," Standard Oil absorbed 22 of its 26 Cleveland competitors.
U manje od četiri mjeseca godine 1872., što će kasnije biti poznato kao "Clevelandsko osvajanje" ili "Clevelandski pokolj", Standard Oil je apsorbirao 22 od svojih 26 Clevelandskih konkurenata.