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 3 · column 7 of 8 · from the scan, no model involved

Reg. 84c 5-oz. Size
COLGATE
TOOTHPASTE
49c Limit 2 Health & Beauty Aids Department
79.5%