Copy of autograph letter signed to G. Delaunay
Copy of autograph letter signed to G. Delaunay
Draft autograph letter signed to Simon Newcomb
Draft autograph letter signed to Simon Newcomb
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 S. Newcomb
Copy of letter to S. Newcomb
Autograph letter signed to J.C. Adams
Autograph letter signed to J.C. Adams
Autograph letter signed to J.C. Adams
Autograph letter signed to J.C. Adams