Letters from J.S. Mill to Thomas Bayley Potter, 1864-1865; Goldwin Smith to Bright, 1876; Henry Tupper to T.B. Potter, M.P. for Rochdale (1865-1895), 1864; John Thomson to T.B.Potter, 1852-1876; John Bigelow to T.B. Potter, 1863; Bright to Sir John Potter; Bright to Arthur B. Potter