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 21 · column 1 of 4 · from the scan, no model involved

I
F Richmond -WATERHEATERS
GAS •Glass-lined tanks •Foam insulated 30 1 2.95
40 gal. .*??*•*.. * 1 24.95 ELECTRIC
30 gal. 'F.',.30:! .. *99.99
40 gal. $118.95^
80.8%