What was advertised in a revolutionary American newspaper 250 years ago today?

“I beg leave … to recommend it to our military gentlemen as a book of public utility.”
In an advertisement in the September 7, 1776, edition of the Pennsylvania Evening Post, Robert Aitken, a printer and bookseller, promoted “L’INGENIEUR de CAMPAGNE, or FIELD ENGINEER. Written in French by the Chevalier de Clairac, and translated by Major Lewis Nicola.” To make the work more enticing to prospective customers, Aitken supplemented it with “a short Treatise on SEA BATTERIES, shewing their defects, and an attempt to remedy them,” and “an explanation of all the technical terms used in the work. By the Translator.” The manual also included helpful illustrations, “forty useful quarto copperplates.” It was one of many military manuals published and marketed in Philadelphia and other cities during the era of the American Revolution.
Quite conveniently, a letter to Benjamin Towne, the printer of the Pennsylvania Evening Post, signed by “A Well-Wisher to the cause” just happened to appear immediately to the left of Aitken’s advertisement. The anonymous correspondent explained that during a recent visit to Aitken’s printing office for other business he “took up a book which I found to be the FIELD ENGINEER, just published by him in English.” Enthralled by those parts that he “dipped into,” the “Well-Wisher to the cause” purchased the book and carefully read it. Now he felt compelled to declare that “the inhabitants of America are obliged to the translator for furnishing us, in our own language, with instructions so useful to all officers in the species of war we are obliged to wage in defence of our liberties.” The “Well-wisher to the cause” highlighted the part of the book he considered “particularly applicable to the present exigency and state of things at New-York, as it gives ample instructions for preventing an enemy’s passing a river.” Following its defeat at the Battle of Long Island near the end of August, the Continental Army retreated from Brooklyn to Manhattan. Many residents of the city had already fled to the countryside to escape the British invasion and occupation. Patriots feared what would happen if General George Washington and the Continental Army could not prevent the British from crossing the Hudson River. The “Well-Wisher to the cause” may have also worried about the prospects of British forces crossing the Delaware River to capture Philadelphia if they could not be stopped in New York. “I beg leave, by the channel of your paper,” he wrote, “to recommend it,” The Field Engineer, “to our military gentlemen as a book of public utility.” Whether or not Aitken coordinated with the “Well-Wisher to the cause” (or wrote the recommendation himself), the proximity of the letter to his advertisement reinforced his efforts to sell the book.





































