Copy of autograph letter signed to Charles Delaunay
Copy of autograph letter signed to Charles Delaunay
Draft? autograph letter signed to Charles Delaunay
Draft? autograph letter signed to Charles Delaunay
Draft? autograph letter signed to Charles Delaunay
Draft? autograph letter signed to Charles Delaunay
Draft? autograph letter signed to Charles Delaunay
Draft? autograph letter signed to Charles Delaunay
Draft? autograph letter signed to Charles Delaunay
Draft? autograph letter signed to Charles Delaunay
Draft? autograph letter signed to G. Delaunay
Draft? autograph letter signed to G. Delaunay
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
Draft speech to Royal Society
Draft speech to Royal Society
Autograph letter signed to J.C. Adams
Autograph letter signed to J.C. Adams