John Poole. Crotchets in the Air; or, an (Un)Scientific Account of a Balloon-Trip, in a Familiar Letter to a Friend. London: Henry Colburn, 1838. First edition. Octavo. 98pp + 2pp ads. Publisher's green pictorial cloth, spine and front cover lettered and decorated in gilt, endleaves in yellow.Dickens colleague John Poole's first-hand account of an.....