Citation - Rivington's New York Gazette: 1779.07.31

RNYG.779.122
31 Jul 1779:42 (296)
A sextant, with an adjusting screw, an excellent quadrant, a
pocket camera, an opera glass, a case of very good
mathematical instruments, made by an excellent a workman as
any in England.  To be sold, enquire of the Printer.
A magick lanthorn, with a dozen curious slips containing
grotesque groups of figures, &c. 
Also a perspective glass, to view prints, pictures, &c. with
a dozen prints.  To be sold, enquire of the Printer.