Passage: Labor unions generally ignored government employees because they were controlled mostly by the patronage system used by the political parties before the arrival of civil service. Post Office workers did form unions. The National Association of Letter Carriers started in 1889 and grew quickly. By the mid-1960s it had 175,000 members in 6,400 local branches. Several competing organizations of postal clerks emerged starting in the 1890s. Merger discussions dragged on for years, until finally the NFPOC, UNMAPOC and others merged in 1961 as the United Federation of Postal Clerks.  Another round of mergers in 1971 produced the American Postal Workers Union .  In 2012 the APWU had 330,000 members.  The various postal unions did not engage in strikes.
After the United Federation of Postal Workers merger, how many years passed before the mergers produced the American Postal Workers Union? How many members and local branches did the National Association of Letter Carriers have in the mid-1960s? How many more members did the APWU 330,000 did they have than the National Association 175,000 members? How many more members did the APWU have in 2012 over the National Association of Letter Carriers in the mid-1960s? How many more members did the APWU have than the National Association of Letter Carriers had? How many more workers did the union have in 2012 than it did in the mid-1960s? How many years after the National Association of Letter Carriers began did it finally merge into the United Federation of Postal Clerks? How many years after the formation of the United Federation of Postal Clerks did the American Postal Workers Union form? How many years after the start of the National Association of Letter Carriers did the United Federation of Postal Clerks form? How many years did it take for the various organizations of postal clerks to merge? How many years passed between the two rounds of mergers? How many years were there between the mergers of the various postal clerk unions? What happened first, the formation of American Postal Workers Union or the United Federation of Postal Clerks? Which formed second, The National Association of Letter Carriers or the United Federation of Postal Clerks? Who was the last Post Office workers to form a union, The National Association of Letter Carriers in 1889 or APWU in 2012?