Sombrotto became an official member of NALC in 1947 and played a huge part in the U.S. postal strike of 1970.
1970 | United States Postal Service | 1970 in music | strike | 1970 FIFA World Cup | Strike action | 1970 in baseball | Counter-Strike | Rowland Hill (postal reformer) | Lucky Strike | United Kingdom general election, 1970 | strike action | 1970–71 in English football | The Postal Service | Love Story (1970 film) | Great Railroad Strike of 1877 | 1970 in film | United States House of Representatives elections, 1970 | UK miners' strike (1984–1985) | Strike It Lucky | Strike Anywhere | Isle of Wight Festival 1970 | The Nazis Strike | Strike Witches | Jay and Silent Bob Strike Back | Going Postal | general strike | European Conference of Postal and Telecommunications Administrations | 1970 London to Mexico World Cup Rally | 1970 in television |