50 color maps, on sheets 47 x 114 cm or smaller, folded to 25 x 11 cm. Based on British Ordnance Survey maps. Covers England, Scotland, Wales (sheets 1-22), and Ireland (sheets 23-31); includes multiple editions of some sheets. Front covers of all sheets include a series index map for this Michelin map of the British Isles. For separately published series index map, covering only sheets 4-22, see Michelin map of England & Wales (1922?) in Series 1, Europe, subseries 15, small scale maps of British Isles: Great Britain and Ireland. Beginning about 1923 Michelin reformatted its coverage of the British Isles, reassigning numbers 2-15 to larger sheets covering larger regions with new cover titles. The later and larger sheets are arranged separately in Series 2, Europe, subseries 11, regional maps of British Isles, Great Britain, 1923-1932, sheets 2-15.