Block · one region of the page, as the scanner read it. It may hold a whole story, part of one, several, or an advertisement; stitching blocks into articles is the next step. Text is supplied OCR.
Page 6 · column 1 of 4 · from the scan, no model involved

Panels are made o! pressure compressed wafers of wood bonded together with waterproof phenalic resin.
GYPSUM BOARD (Waltboard, Sheetrock)
71.2%