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

Galvanized Steel ROOFING and SIDING
$13
50 Per 100 Sq. Ft. CASH & CARRY IN STOCK SHEETS Galvanized for longer maintenance - free
81.4%