"On This Date in History" Calendar
1928: Friedman's Coded Holiday Gram
It's December 1928 and Elizebeth and William Friedman sent a coded holiday gram to friends and loved ones. The codebreaking couple fortunately included a grille overlay that with a series of quarter turns would reveal the complete message. The full message reads..."For Christmas greetings in '28; Brings you word of xmas cheer; A crypto telephotogram here; We use a means quite up to date."