Letter, from Mrs. Mary Frances Kater to Sir John Herschel, dated at York Gate Autograph letter signed by sender. Capt. Kater is too unwell to write, but he would like to know whether John Frederick William Herschel is likely to claim the Navy Bills for his term as Commissioner of Longitude, as Kater will do whatever John Frederick William Herschel does in this matter. 8 January 1830