Autograph letter signed to J. Challis
Autograph letter signed to J. Challis
Autograph letter signed to J.C. Adams
Autograph letter signed to J.C. Adams
Copy of paper to James Challis
Copy of paper to James Challis
Copy of letter to J.F.W. Herschel
Copy of letter to J.F.W. Herschel
Autograph letter signed to J.C. Adams
Autograph letter signed to J.C. Adams
Copy of letter to James Challis
Copy of letter to James Challis
Copy of letter to U.J.J. Le Verrier
Copy of letter to U.J.J. Le Verrier
Copy of letter to U.J.J. Le Verrier
Copy of letter to U.J.J. Le Verrier
Copy of letter to U.J.J. Le Verrier
Copy of letter to U.J.J. Le Verrier
Copy of letter to D.F.J. Arago
Copy of letter to D.F.J. Arago