NELSON, HORATIO. Autograph letter signed ("Nelson & Bronte") to Rear Admiral Graves, on board the H.M.S. Elephant, 21 April 1801. 1 page, 4to, 254 x 200 mm. (9.7/8 x 7.13/16 in.), sheet separated along center fold, minor browning and staining. Nelson forwards to Graves, "A book for subscription. Will you forgive me when I say that it is not necessary that you should (not having been so much in fortune's way) subscribe so much...I hope [to] hear that your very violent cold is better that it may be and every happiness attendent is the sincere wish of your faithful sov[er]eign & friend". Written on board the same ship from which Nelson fought the Battle of Copenhagen.