6 Typed letter(s) lacking signature, 3 Typed letter(s) signed by the author, 1 Autograph letter(s) S. 1 Typed letter(s) signed by the author with typescript enclosure.
1 Typed letter(s) signed by the author with Typescript (p.c.) enclosure, 3 Typed letter(s) lacking signature, 1 Typed letter(s) signed by the author, 1 pg typescript (p.c.).