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 17 · column 2 of 3 · from the scan, no model involved

it covers 14,679 square miles, and includes all of the Shenandoah River. The Shenandoah joins the Potomac at Harper’s Ferry, W.Va. It flows from Fairfax Sone, W.Va. 380 miles to Point Lookout, Md., where it empties into the Chesapeake Bay. The District of Columbia and parts of Maryland, Pennsylvania, West Virginia, and Virginia are in its watershed.
81.8%