In 1958 the Bronx Valley (#370) and Siwanoy (#401) councils merged to form the Siwanoy-Bronx Valley Council (#401). In 1962 the council changed its name to the Hutchinson River Council (#401).
In 1958 the Bronx Valley (#370.) and Siwanoy (#401) councils merged to form the Siwanoy-Bronx Valley Council (#401) In 1962 the council changed its name to the Hutchinson River Council (#401).