2 Titel in Cayley, Arthur

• 

  Brief [an Rudolf Lipschitz]

  Cayley, Arthur ; Lipschitz, Rudolf

  Cambridge, 07.08.1877 [7t Augt [o.J.; 1877]]
• 

  Brief [an Rudolf Lipschitz]

  Cayley, Arthur ; Lipschitz, Rudolf

  Cambridge, 20.12.1880 [20t Dec. 1880]