This advertisement was published in the Pennsylvania Evening Post (Philadelphia, Pennsylvania) on July 8th, 1778 on page 227. During this period Aitken was making his 1778 New Testament. No know copies of this New Testament survive today.
“ROBERT AITKEN, bookseller opposite the coffeehouse, Front-street, will pay good wages every Saturday evening to a sober industrious man, who understands and can work well at COPPERPLATE printing; likewise to five or six journeymen bookbinders. Books and stationary fold as usual, at the above store. Just published, and well bound, a neat edition of the NEW TESTAMENT; also CROXALL’s FABLES, containing one hundred and ninety-six plates, being a plate to every fable, with pertinent applications; the above books are certainly the best extant for the English scholar, and (in these times) rarely to be et with any where else. He has likewise wrapping paper for sale.”