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Earliest of the three surviving pre-Tractatus notebooks containing also some coded diary entries and at the front a note that on Wittgenstein’s death the volume should be sent to Leopoldine Wittgenstein and Bertrand Russell: 'Nach meinem Tod zu senden an...'.

Chronological continuation of the previous notebook [MS-101]. Contains some coded diary entries and at the front a note that on Wittgenstein’s death the volume should be sent to Leopoldine Wittgenstein and Bertrand Russell: 'Nach meinem Todfe an meine Mutter...'

First line: 'Nur was wir selbst konstruieren'.

Notebook used by Wittgenstein while in Vienna for Christmas 1929 and later as a continuation of MS - 107 [ONB, Vienna]

Notebook continuation of 108 with numerous editorial notes. A portion written in Vienna in December and January in MS-110 fits chronologically within it.

Notebook used by Wittgenstein in Vienna in Dec/Jan 1930-1931 and later as a continuation of 109

Notebook continuation of 110

Notebook containing two distinct texts. The first part is not paginated by Wittgenstein. The second, paginated 1-228 and being continued in the first part of Ms 115 is a revision of part of The Big Typescript. p 21 includes a section containing 3 remarks pasted-in. The Grosses Format (MS-140) is a further reworking of part of this text.

Notebook containing two distinct texts, the first is a continuation of Ms 114. The second, beginning on page 118 and entitled 'Philosophische Untersuchungen, Versuch einer Umarbeitung' is an attempt to revise the Brown Book in German. pp 95-100 consist mostly of pasted-in typescript.

Notebook consisting of four distinct texts. The first is a selection of remarks from TS 213, the second (pp 136-264) is a revision of MS 120, the third (pp 265-315) is original material and the fourth relates to Part I of the Investigations. At the end of the written portion is a letter to Kari [Klingenberg], a friend from Skjolden, 2 Aug. 1945.

Notebook containing a number of distinct parts. The first portion on the philosophy of mathematics overlaps with pp 110 to 126 which contain 3 early drafts for the Philosophical Investigations. pp 148 to 273 are a continuation of ms 122. There are a few coded remarks at the end,

Notebook used in Norway containing remarks on the foundations of mathematics. Includes coded remarks, particularly at the beginning.

Continuation of MS-118. Includes coded remarks. Begins: 'Was wir liefern sind eigentlich...'

Continuation of MS 119 containing numerous coded remarks. Heading, '[Fortsetzung des Heftes XV]...'

Continuation of MS-120

Notebook containing remarks on the foundations of mathematics. Continued in MS-117. Some coded remarks.

Begins 'Kann man sagen, daß der Begriff...'

Begins 'Nun was würde er ein bloßes Denken...'

Used by Wittgenstein while engaged in war-time work. Some coded remarks

Titled by Wittgenstein “Handelt nur von Logic + Mathematik”

Continuation of MS-126

Begins 'Wenn ich nun sage "Ich erwarte"...'

Minute-book style notebook with drafts for the foreword of the Philosophical Investigations in the index section at the front. Text begins 'Vorwort. In dem Folgendem teile ich Gedanken mit..'

First notebook concerned with the nature of psychological concepts. Noted at the front: “Dieses Schreibbuch enthalt fast nur schlechte Satze. Manche von ihnen aber konnen zu besseren Satzen Anregung geben. Die meisten sind blosser Abfall.”

Remarks on the nature of psychological concepts. Begins 'Warum sagt man "Er weiß, was er meint"?'

Remarks on the nature of psychological concepts. Begins 'Wenn das wahr ist, daß wir die Art...'

Remarks on the nature of psychological concepts. Some coded remarks. Begins 'Sagt man nicht von dem, man kenne es...'

Remarks on the nature of psychological concepts. Begins 'Sowie wir hier ein Schema verwenden...'

Remarks on the nature of psychological concepts. Noted at the front “In diesem Band kommt auf 10 oder 20 Seiten nicht mehr als ein halbwege gutter Abschnitt”

Remarks on the nature of psychological concepts