Official records (1877–1906) of the party, including minutes, correspondence, and financial records of the National Executive Committee, the party press, the National Board of Appeals, the national conventions, the Socialist Trade and Labor Alliance, and State committees. The first seven files pertain to the records of the national headquarters and the New York City local. These files include minutes, correspondence, circular letters, articles, lists and financial papers. Of special interest are the Central Committee and Grievance Committee minutes of the New York City local.