Report on Challis's paper "A direct method of obtaining analytically the mean motions of the apses & nodes of the moon's orbit".
Report on Challis's paper "A direct method of obtaining analytically the mean motions of the apses & nodes of the moon's orbit".
Draft autograph letter signed to James Simms
Draft autograph letter signed to James Simms
Copy of letter to J.W. Lubbock
Copy of letter to J.W. Lubbock
Autograph letter signed to F. Bashforth
Autograph letter signed to F. Bashforth
Autograph copy of letter signed to J. Challis
Autograph copy of letter signed to J. Challis
