Copy of letter to James Challis
Copy of letter to James Challis
Copy of letter to James Challis
Copy of letter to James Challis
Copy of letter to James Challis
Copy of letter to James Challis
Copy of letter to H.M. Butler
Copy of letter to H.M. Butler
Copy of letter to D.F.J. Arago
Copy of letter to D.F.J. Arago
Copy of letter to Arthur Cayley
Copy of letter to Arthur Cayley
Copy of letter to A. Sedgwick
Copy of letter to A. Sedgwick
Copy of letter to A. Sedgwick
Copy of letter to A. Sedgwick
Copy of letter to A. Sedgwick
Copy of letter to A. Sedgwick
Copy of letter to A. Sedgwick
Copy of letter to A. Sedgwick