Copy of letter to C. Delaunay
Copy of letter to C. Delaunay
Copy of letter to C. Delaunay
Copy of letter to C. Delaunay
Copy of letter to C. Delaunay
Copy of letter to C. Delaunay
Copy of letter to C. Delaunay
Copy of letter to C. Delaunay
Copy of letter to C. Delaunay
Copy of letter to C. Delaunay
Copy of letter to G.B. Airy
Copy of letter to G.B. Airy
Copy of letter to G.B. Airy
Copy of letter to G.B. Airy
Copy of letter to S. Newcomb
Copy of letter to S. Newcomb
Copy of letter to W. De La Rue
Copy of letter to W. De La Rue
Copy of letter to W. De La Rue
Copy of letter to W. De La Rue