NEW YORK SPECTATOR, May 1, 1818 

* United States Flag revision

The back page has over 2 columns taken up with a very lengthy list of Acts of Congress which were recently passed. Included very inconspicuously within the list is: "To establish the flag of the United States--House, April 4, 1818." (text of the Act not included)
This was the historic Act which formalized how the flag would be altered in future as additional states join the Union.
Four pages, nice condition.