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 5 · column 4 of 7 · from the scan, no model involved

N». 4S Smooth Sorfoco—Cood ■ 4 for temporary construction or low* , . cost buildirgi.por roll
Ne. 55 Smooth Surface—Good, substantial roofing at a popular price .
No. AS Smooth Surface — Top quality. Extra heavy felt base. Built for years of service..
No. 90 Slate Surface—Heavy duty. For Icrg life. Available In several t:lors .
43.5%