Contains minutes of general membership meetings (1947-74, 1979-88) and minutes of the executive board meetings (1950-56, 1960-88). The earliest minutes for ALA Local 59 no longer exist, and there are two significant gaps in the minutes, but otherwise these are complete. No minutes for LPIU Local 21-P are included in these minutes. Local 59 was apparently the dominant union, and only its minutes survive. For an interesting comparison with the actual minutes, see the subject files for the agendas for meetings (1973-85) as kept by the president of the local.