90 color maps, on sheets 100 x 155 cm or smaller, folded to 25 x 11 cm. or smaller. Less detailed than Michelin's multiple series of large scale regional maps of Spain and Portugal, these small scale maps primarily feature main highways ("grandes carreteras", "grandes estradas", or "grandes routes") and major roads. Most maps at scale 1:1,000,000; Portuguese national maps at scale 1:400,000 or 1:500,000. Sheet numbers include 37 (14 editions), 38 (5 editions), 39 (8 editions), 437 (2 editions), 440 (3 editions), 733 (2 editions), 734 (6 editions), 794 (1 edition), 938 (4 editions), 939 (4 editions), 940 (1 edition) , and 990 (33 editions). Sheet 794 is printed on water-resistant and tear-proof material, identified as "haute résistance". See also Series 1, France, subseries 9, client and thematic maps, for variant editions of sheet 990, published by Michelin for Firestone-Hispania and P. & O. European Ferries in 1983 and 1988.