The theory and practice of book imposition : using the system of groups-of-four as originally introduced by the author ... a treatise
A 1910 Seattle treatise on printing imposition by Charles Joseph Schott, written for printers and bookbinders to explain arranging pages on a sheet using his groups-of-four system. The pictures are plain line diagrams of page layouts, folding schemes and signature arrangements, with numbered page blocks and fold arrows, showing how a designer might map sheet structure and grid-based layouts.
