Citation - Royal Pennsylvania Gazette: 1778.04.10

RPG.778.017
10 Apr 1778:43 (12)
This day is published, and to be sold at the shop of J.
Robertson, in Front-street, (price, one dollar.) New and
Complete Instructions for the Violin, containing, the
easiest  and best methods for learners to obtain a
proficiency.
  With some useful directions, lessons, graces, &c.
To which is added, a favourite collection of airs, marches,
minuets, &c. with several excellent pieces for two violins. 
by H. B. Victor.