Fourth Book of Kings (Author Compiled by Isaias and Jeremias from records of Nathan, Gad, Addo, Ahias, Jehu and others.)
10:7And when the letters came to them, they took the king's sons, and slew seventy persons, and put their heads in baskets, and sent them to him to Jezrahel.
Original from Project Gutenberg - Massive cleanup of OCR problems and editing done locally.