12977 items

• Letter from Deknatel, J.A. (Nederlandsche Beheersinstituut) to Plessner, Helmuth
  1946-05-17
• Letter from Gumbel, E. J. to Plessner, Helmuth
  1935-12-15
• Letter from Litt, Theodor to Plessner, Helmuth
  1934-03-25
• Letter from Landry, Harald to Plessner, Helmuth
  1936-08-21
• Letter from Landry, Harald to Plessner, Helmuth
  1936-06-09
• Letter from Landry, Harald to n.d.
• Letter from Bonn, M.J. to Plessner, Helmuth
  1936-05-12
• Letter from Morduchai-Boltowski, Dmitri to Plessner, Helmuth
  1934-02-23
• Letter from Franken, J.C. to Plessner, Helmuth
  1934-02-17
• Letter from Pos, Hendrik J. to n.d.
  1934-02-07
• Letter from Wolf, Herman to Plessner, Helmuth
  1934-02-08
• Letter from Plessner, Helmuth to n.d. (A.W. Sijthoff's Uitgeversmaatschappij N.V.)
  1935-03-15
• Letter from Schaxel, J. to Plessner, Helmuth
  1935-08-31
• Letter from Schaxel, J. to Plessner, Helmuth
  1935-11-01
• Letter from Schaxel, J. to Pos, Hendrik J.
  1935-12-10
• Letter from Barth, Hans (Neue Zuercher Zeitung) to Plessner, Helmuth
  1935-12-02
• Letter from Plessner, Helmuth to Misch, Georg
  1934-02-24
• Letter from Plessner, Helmuth to Binswanger
  1934-01-31
• Letter from Misch, Georg to Plessner, Helmuth
• Letter from Misch, Georg to Plessner, Helmuth
• Letter from Gebrauech, S. (Sanatorium Schloss Fuerstenberg) to Buytendijk, Frederik J.J.
  1934-02-22
• Letter from n.d. (A.W. Sijthoff's Uitgeversmaatschappij N.V.) to Plessner, Helmuth
  1935-02-26
• Letter from n.d. (N.V. Kosmos Uitgevers-maatschappij) to Buytendijk, Frederik J.J.
  1934-03-24
• Letter from Plessner, Helmuth to n.d. (Art. Institut Orell Fuessli)
  1934-05-23
• Letter from n.d. (Verlag Orell Fuessli) to Plessner, Helmuth
  1934-05-28