Citation - New York Mercury (Gaine): 1759.11.12

NYM(G.759.076
12 Nov 1759:23 (378)
This is to give notice, that the violin and German flute are
taught by Messrs. Vandienval and Hulett, at Mr. Procter's,
watch-maker, the corner of French Church-Street, opposite
Mr. Philip Philipse; where constant attendance is given,
from twelve 'til eight in the evening, the morning devoted
to attend those gentlemen that chuse to be taught at their
own houses.
N.B.  Mr. Procter likewise teaches the harpsicord, and gives
the same attendance.