Citation - Boston Evening Post (Fleet): 1775.04.03

BEP(F.775.021
3 Apr 1775:32 (2062)
Mr. Morgan requests leave to acquaint his subscribers and
the public in general, that his first evening's
entertainment will be on Tuesday the 11th instant; when will
be performed a concert of vocal and instrumental music: 
between the parts of which will be deliver'd (gratis)
several comic lectures on various subjects.
  Tickets at three shillings sterling each to be had at the
British Coffee-House, and of Mr. Morgan at his chamber near
the Mill-bridge, where such gentlemen as chuse to subscribe
may be inform'd of the proposals.
  N.B.  No person can be admitted without a ticket.  The
concert will begin at 6 and the lecture at 7 o'clock.