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 11 · column 3 of 5 · from the scan, no model involved

ROOF COATING w • Asphalt Fiber ' • Waterproof.
345 I GALLON 5 GALLONS
59.8%