The records of the Western Massachusetts locals and district councils of the UBCJA documents the rise of unionization among carpenters in the Connecticut River Valley since the 1880s. This collection represents a merger of separate accessions for the District Councils in Springfield (MS 110), the Pioneer Valley (MS 231), and Holyoke (MS 108), along with post-merger records for Local 108. In general, each has been maintained as a distinct series.
