3648423 Density of population, Central Scotland (colour litho) by English School, (20th century); Private Collection; (add.info.: Density of population, Central Scotland. Illustration for The Survey Gazetteer of the British Isles, Topographical, Statistical and Commercial, Compiled from the 1901 Census and the latest Official Returns edited by J G Bartholomew (George Newnes, 1904).); by Look and Learn.