London Underground posters.- Cosomati (Aldo) Journeys per head of population..., lithograph in colours, on thin wove paper not backed onto linen, sheet 1020 x 640 mm (40 1/8 x 25 1/4 in), minor handling creases, unframed, Sanders Phillips and Co., The Baynard Press, 1927; together with a duplicate poster of 'Journeys per head of population', and with two impressions of Cosomati's 'Travel is as safe as possible on the Underground', and another two impressions of Travel is as cheap as possible on the Underground', lithograph in colours, each on thin wove paper not backed onto linen, sheets approx. 1020 x 640 mm (40 1/8 x 25 1/4 in), minor handling creases, unframed, Sanders Phillips and Co., The Baynard Press, 1927-1928 (6)