![WITTGENSTEIN, Ludwig (1889-1951). Two autograph letters signed ('Lud Wittgen' and 'L Wittgen') to [Moritz] Schlick, n.p. [Cambridge], n.d. [22 August and 27 November 1930]. WITTGENSTEIN, Ludwig (1889-1951). Two autograph letters signed ('Lud Wittgen' and 'L Wittgen') to [Moritz] Schlick, n.p. [Cambridge], n.d. [22 August and 27 November 1930].](https://www.christies.com/img/LotImages/2019/CKS/2019_CKS_17200_0583_001(wittgenstein_ludwig_two_autograph_letters_signed_to_moritz_schlick_np061030).jpg?mode=max)
WITTGENSTEIN, Ludwig (1889-1951). Two autograph letters signed ('Lud Wittgen' and 'L Wittgen') to [Moritz] Schlick, n.p. [Cambridge], n.d. [22 August and 27 November 1930].
![WITTGENSTEIN, Ludwig (1889-1951). Autograph letter signed ('Ludwig Wittgenstein') to Moritz Schlick, n.p., 18 September [1930], in German. WITTGENSTEIN, Ludwig (1889-1951). Autograph letter signed ('Ludwig Wittgenstein') to Moritz Schlick, n.p., 18 September [1930], in German.](https://www.christies.com/img/LotImages/2016/CKS/2016_CKS_12139_0152_000(wittgenstein_ludwig_autograph_letter_signed_to_moritz_schlick_np_18_se101000).jpg?mode=max)
WITTGENSTEIN, Ludwig (1889-1951). Autograph letter signed ('Ludwig Wittgenstein') to Moritz Schlick, n.p., 18 September [1930], in German.
![Letters from Ludwig Wittgenstein,: With a memoir; (English and German Edition) by [Wittgenstein, Ludwig] Engelmann, Paul - 1967-01-01 Letters from Ludwig Wittgenstein,: With a memoir; (English and German Edition) by [Wittgenstein, Ludwig] Engelmann, Paul - 1967-01-01](https://d3525k1ryd2155.cloudfront.net/h/504/623/1461623504.0.x.jpg)
Letters from Ludwig Wittgenstein,: With a memoir; (English and German Edition) by [Wittgenstein, Ludwig] Engelmann, Paul - 1967-01-01
![Review Wittgenstein in Cambridge, Letters and Documents 1911-1951 ed. Brian McGuinness - The Dabbler Review Wittgenstein in Cambridge, Letters and Documents 1911-1951 ed. Brian McGuinness - The Dabbler](http://thedabbler.co.uk/wp-content/uploads/2012/05/wittgenstein-and-skinner-in-cambridge.jpg)
Review Wittgenstein in Cambridge, Letters and Documents 1911-1951 ed. Brian McGuinness - The Dabbler
Letters from Ludwig Wittgenstein, with a memoir; : Engelmann, Paul, 1891-1965 : Free Download, Borrow, and Streaming : Internet Archive
![WITTGENSTEIN, Ludwig (1889-1951). Autograph letter signed ('Lud Wittgenst') to [Moritz] Schlick, n.p., 20 November 1931. WITTGENSTEIN, Ludwig (1889-1951). Autograph letter signed ('Lud Wittgenst') to [Moritz] Schlick, n.p., 20 November 1931.](https://www.christies.com/img/LotImages/2017/CKS/2017_CKS_14299_0076_000(wittgenstein_ludwig_autograph_letter_signed_to_moritz_schlick_np_20_no051144).jpg?mode=max)
WITTGENSTEIN, Ludwig (1889-1951). Autograph letter signed ('Lud Wittgenst') to [Moritz] Schlick, n.p., 20 November 1931.
![View of Newly Discovered Wittgenstein Autograph in the Austrian National Library | Nordic Wittgenstein Review View of Newly Discovered Wittgenstein Autograph in the Austrian National Library | Nordic Wittgenstein Review](http://wab.uib.no/agora/graphics/nwr-schmidt2012.png)
View of Newly Discovered Wittgenstein Autograph in the Austrian National Library | Nordic Wittgenstein Review
![Letters from Ludwig Wittgenstein with a Memoir. By Paul Engelmann. Oxford, Basil Blackwell, 1967. Pp. xv, 150. 25s. | Dialogue: Canadian Philosophical Review / Revue canadienne de philosophie | Cambridge Core Letters from Ludwig Wittgenstein with a Memoir. By Paul Engelmann. Oxford, Basil Blackwell, 1967. Pp. xv, 150. 25s. | Dialogue: Canadian Philosophical Review / Revue canadienne de philosophie | Cambridge Core](https://static.cambridge.org/content/id/urn%3Acambridge.org%3Aid%3Aarticle%3AS0012217300039858/resource/name/firstPage-S0012217300039858a.jpg)