GELLIBRAND (HENRY): An Epitome of the Art of Navigation, edited by JAMES ATKINSON, London, for T. Page, W. and F. Mount, 1728, 12°, 3 folding engraved plates (A1-4 with loss from worming), contemporary panelled sheep (damaged spine) -- MARTIN (BENJAMIN): The Mariner's Mirror; or the principles of Navigation, London, for, and sold by the Author, 1768, 2 parts in one, 8°, 3 folding engraved plates, contemporary mottled sheep; and 22 others on navigation. (24)