He was town-major of Philadelphia during the Revolution, wrote several military works, but is chiefly remembered for his letter to General Washington in May, 1783, asking him to accept the title of King of the United States.
The magazine contained various practical articles and sketches of American occurrences. In the February number was a large and curious engraving, the only one in all the issues of the magazine, representing the manner of fowling in Norway. The engraver is unknown.
The price of the magazine was 13 shillings, Pennsylvania currency. It was suspended in September, 1769.
"The Pennsylvania Magazine, or American Monthly Museum, Vol. I, 1775, Philadelphia, printed and sold by R. Aitken, printer and bookseller, opposite the London Coffee-house, Front Street," was published amidst preparations for war. The publisher apologized for lack of variety in the year's work, by saying that we in America "are deprived of one considerable fund of entertainment which contributes largely to the embellishment of the magazines in Europe, viz., discoveries of curious remains of antiquity.... We can look no further back than to the rude manners and customs of the savage aborigines of North America ... but the principal difficulty in our way is the present importunate situation of public affairs ... every heart and hand seems to be engaged in the interesting struggle for American Liberty."
Thomas Paine arrived in Philadelphia in 1775, with letters from Franklin, and was immediately employed by Aitken as editor of the Pennsylvania Magazine, with a salary of £25, currency, a year. In his preface to the first number, January 24, 1775, Paine wrote: "We presume it is unnecessary to inform our friends that we encounter all the inconveniences which a magazine can possibly start with. Unassisted by imported materials we are destined to create what our predecessors in this walk had only to compile; and the present perplexities of affairs have rendered it somewhat difficult for us to procure the necessary aids. Thus encompassed with difficulties, the first number of the Pennsylvania Magazine entreats a favorable reception; of which we shall only say, like the early snowdrop, it comes forth in a barren season, and contents itself with modestly foretelling that choicer flowers are preparing to appear."
The vignette of the Pennsylvania Magazine represents the Goddess of Liberty, with a pole and a liberty-cap, holding a shield with the Pennsylvania arms. On the right of the figure is a mortar inscribed "The Congress." In the foreground is a plan of fortifications with cannon balls. In the background are cannon with battle-axes and pikes. A gorget with "Liberty" upon it is hanging on a tree, and beneath it the motto
"Juvat in Sylvis habitare."
The magazine had numerous illustrations: a portrait of Goldsmith, plans of a threshing machine, an electrical machine, Donaldson's dredging machine, etc., etc.
Francis Hopkinson and Witherspoon were among the earliest contributors. William Smith and Provost Ewing assisted in later numbers. Benjamin Rush and Sergeant and Hutchinson imparted to Paine, in their walks in State House yard the suggestions of "Common Sense," the pamphlet which "had a greater run than any other ever published in our country," and which, as Elkanah Watson said, "passed through the continent like an electric spark. It everywhere flashed conviction, and aroused a determined spirit, which resulted in the Declaration of Independence, upon the 4th of July ensuing. The name of Paine was precious to every Whig heart, and had resounded throughout Europe."
A department of the Pennsylvania Magazine, called "Monthly Intelligence," reported the progress of the war, and furnished engravings of the battles, and of General Gage's lines. It was the first illustrated magazine published in the city. It was also the first that made more than one volume. The second volume began in January, 1776, and ended in July, 1776. The last number contained the Declaration of Independence.