Meanwhile, elsewhere in Chicago the Federations and Michiganders and their supporters established the Communist Party of America at a convention gaveled to order on September 1, 1919. Unity between these two communist organizations was a lengthy and complicated process, formally taking place at a secret convention held at the Overlook Mountain House hotel near Woodstock, New York in May 1921 with the establishment of a new unified Communist Party of America. A Left Wing loyal to the Communist International remained in the Socialist Party through 1921, continuing the fight to bring the Socialist Party into the ranks of the Comintern. This group, which opposed the underground secret organizations which the Communist Parties had become, included noted party journalist J. Louis Engdahl and William Kruse, head of the party's youth affiliate, the Young People's Socialist League, as well as a significant segment of the Socialist Party's Chicago organization. These left-wing dissidents continued to make themselves heard until their departure from the party after the convention of 1921.