The letters written by Robert Browning to Isabella Blagden constitute the longest sustained correspondence carried on by the poet with any individual. The correspondence extends over more than twenty years, and for more than ten years of that time letters once every month were exchanged. This scheme of exchange—Miss Blagden to write on the twelfth and Browning to reply on the nineteenth—was begun in June, 1862. The correspondence ended in December, 1872, within a few weeks of the death of Miss Blagden. In bulk the letters outweigh those written to any other individual except Elizabeth Barrett. In style they are loose, usually hurried, dynamic, faultily constructed, friendly letters—full of gossip, opinion, detraction, dogged frankness, and honest vehemence. They are Browning, unadorned and prosy. Possibly no other single source offers so much information concerning his intimate life.