Chronological history of the United States, arranged with plates on Bem's principle
A chronological history of the United States published in New York in 1856 by Sheldon and Blakeman, written by Elizabeth Palmer Peabody as a teaching aid for students using her arrangement of dates on Bem's principle. The pictures are grid diagrams of small colored squares and triangles marking years in the margins, plus one black-and-white engraving of a classroom with a stage and rows of seated pupils. A designer might take the modular tile grid with its scattered coloured fills as a pattern for layouts, and the engraved schoolroom as a reference for crowded period interiors.
