Fifty hats that changed the world / 50 hats that changed the world Design Museum. - London : Conran Octopus, 2011. - 106 p. col. ill.; 21 cm. ISBN: 1840915692 £12.99 9781840915693 £12.99 Nat. Bib. No.: GBB0B9893 bnb Subjects--Topical Terms: Headgear Dewey Class. No.: 391.43