Print. Page from Gentleman's Magazine, April 1786, [opposite] p297 with nine figured diagrams, [London] 1786. Engraving, sheet [unfolded to] 21x31cm. Figure 1, The Flying Ship relating to p.297, version of engraving by B. Cook; Conjectural image of the airship launched by Bartholemeu Lomenco de Gusmao (ca. 1675-1724) in Lisbon in 1709. also Figure 3, Linen Yarn Office at Dublin, [facade] relating to p298;