31 Typed letter(s) lacking signature, 34 Typed letter(s) signed by the author, 1 Typed letter(s) signed by the author (photocopy), 1 Typed letter(s) signed by the author with typescript (photocopy) enclosure, 1 typescript.
1 Typed letter(s) lacking signature with typescript enclosure, 28 Typed letter(s) lacking signature, 30 Typed letter(s) signed by the author, 2 Typed letter(s) signed by the author (p.c.) 1 Autograph letter(s) S. with holograph notations.