John Nagy on “Invisible Ink, Spycraft of the American Revolution”

John Nagy

John’s presentation on gathering and transmitting military information during the Revolutionary War was very intriguing. The sophistication of codes designed for use to conceal information in letters is still being used today. They used alphabet matrices, cut out masks placed over written groups of words and words themselves that have different meanings. John showed us how sophisticated intelligence information was transmitted in colonial times. John is greatly welcome to come back even though his presentations are of another time period. Continue reading →