The State of Maine's 1822 issue of 100 stands of double-sided Militia colors is possibly the earliest example of copper engraved four-color printed flags. These flags were produced in Boston utilizing the talents of a famous painter/designer, John Ritto Penniman and several local craftsmen and craftswomen. The design is unique and finely detailed and is an excellent example of the fine printing arts. Dave Martucci, a vexillologist, currently serves as president of the North American Vexillological Association and Secretary (Treasurer of the New England Vexillological Association. He edits Nava News and the NEW ENGLAND JOURNAL OF VEXILLOLOGY and has published numerous articles in the vexillological press. Among other things, he is an antique flag appraiser and an expert on the U.S. Flag. He was the fact-checker for the historic U.S. Stamps released by the Postal Service on June 14, 2000 and was interviewed for a History Channel film on the U.S. Flag. An earlier version of this article was presented at the Eighteenth International Congress of Vexillology, in Victoria, British Columbia, in 1999 and subsequently published in the proceedings of that meeting.
Martucci, David. "Technology to the Rescue! Maine’s First State Colors." Maine History 41, 2 (2002): 170-180. https://digitalcommons.library.umaine.edu/mainehistoryjournal/vol41/iss2/5