Wittgenstein's Vienna Book

I first read Wittgenstein's Tractatus Logico-Philosophicus (TLP) in a class in 1975. In 1976-77 I undertook to compile what I called a "Cultural-Historical Introduction to Wittgenstein's Tractatus." But I soon discovered that this book had been published in 1973, accomplishing most all of what I had wanted to do, only far better. This is essential reading for anyone interested in the TLP. This is about the 4th time I've read the book, but I am only now listing it in Goodreads b/c my listings only cover what I have read since 2006. This book provides all the Austrian background to Wittgenstein that Anglophone students were generally unaware of. I have recently come back to my original project--now as a collection of materials that influenced Wittgenstein (positively or negatively) in his composition of the TLP. So I returned to this book for help in finding references. But it was worth the re-read. The book is co-authored, and I have come to know the first author (Allan Janik)--in fact my current copy of the book is signed by him--a fine scholar and man. He emphasizes the importance of Karl Kraus for setting up the problems that Wittgenstein came to address in TLP. I recently read a new edition and commentary on some of Kraus's writings (by Jonathan Frazen) and this makes for an interesting comparison. Both books look at what Kraus means for today (though "today" in this book was the early 1970s). While this book's applications (Ch 9) are dated, this book's account of Kraus and his relevance as a cultural critic is far superior to Frazen's discussion.
Even if you are not a philosopher interested in Wittgenstein, this book offers a wide-ranging account of cultural issues generally that touches on such figures as Schoenberg (music), Loos (architecture), Musil (literature), Hertz (physics), and dozens of others.