Korrespondenz von Great Northern Hotel an Henry Marx

Deutsches Theater <New York, NY>

New York City Center

International Artists Productions <New York, NY; Frankfurt, Main>

Players from abroad <New York, NY>

Actor's Studio <New York, NY>

Düsseldorf / Information and Tourist Office <New York, NY>

Keystone view company <New York, NY u.a.> / Pressebüro und Illustrationsverlag <Berlin>

Lucy Kroll Agency <New York, NY>

Music Theatre International <New York, NY>

HB-Playwrights Foundation <New York, NY>

Harold Freedman, Brand und Brand Dramatic Department <New York, NY>

Leah Salisbury Inc. <New York, NY>