Citation - New Hampshire Gazette-Portsmouth: 1774.03.18

NHG-P.774.023
18 Mar 1774:32 (908)
Edward Hackett Opens his Dancing School on the 24th of 
March instant, at the Assembly House in Portsmouth, where he
will instruct such gentlemen and ladies are inclined to
attend:  and the utmost pains and care will be taken with
them--The times for attendance will be on Thursdays in the
afternoon, and Friday's in the forenoon.  Said Hackett gives
notice also, that he keeps school at Newbury Port and
Haverhill.