Signal Book for the Ships of War', 1799, issued by Admirals James Gambier, William Young and Robert Man, to Captain Henry d'E Darby, HMS SPENCER
Printed book: 'Signal Book for the Ships of War', 1799, with some manuscript additions, coloured flags, fold out diagrams, issued by Admirals James Gambier, William Young and Robert Man, to Captain Henry d'E Darby, HMS SPENCER, Spithead, 13 May 1799