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 3 of 4 · from the scan, no model involved

vJ5k*y Tutf-R SHEATHING
© •1/2" x 4' x 8'; ‘R-value 3.6 ‘Higher R-values mean greater insulating power. Ask us tor the fact sheet on R-values.
$C99
73.2%