 Regarded as the largest organ in the United States, this instrument contained 5,474 pipes and 84 registers and may now be heard (altered by Æolian–Skinner) in its own hall in Methuen.On December 28, 1865, the association began its sponsorship of public concerts by the Harvard Orchestra, conducted by Carl Zerrahn.Of these concerts, which took place in the Music Hall, "King's Dictionary of Boston" reported in 1883