THE AMERICAN MUSEUM, Philadelphia, October, 1787  Certainly the most notable article is the over 7 page account headed: "Adventures of Col. Daniel Boon, one of the Original Settlers at Kentucke" which is signed by him at its conclusion: Daniel Boon, Fayette County, Kentucke.
This is a wonderful report, by Daniel Boone himself, with great detail. It is rare to find accounts about Boone from when he was still living (died in 1820), let alone from his own pen.
Among other articles are: "Observations on the late Insurrection in Massachusetts" which is on the Shays' Rebellion; "Account of Dartmouth College in New England" "Address to the Freemen of Pennsylvania relative to the new Constitution" "Remarks on the late Insinuations against General Washington" "Resolutions of Inhabitants of Alexandria" "Resolutions of Inhabitants of Carlisle" "Constitution of the Philadelphia College of Physicians"  "Extracts from the Proceedings of the General Assembly of Connecticut, May 12, 1787" which relates to the Constitutional Convention.
Complete in 104 pages, disbound, measures 4 3/4 by 7 3/4 inches, lacking the full title page, the table of contents at the back of the issue. Nice condition.

This title, along with the "Columbian Magazine", has the honor of being the first successful American magazine, both published in Philadelphia. The Museum was published by Mathew Carey and existed from January, 1787 thru the end of 1792.