André Carus’s Carnap Blog.
Doug Marshall’s carnap.org site, including an index of symbols in Carnap’s Syntax, bibliography, and some Carnap texts.
Carnap Collection at the Archives for Scientific Philosophy, Pittsburgh
Carnap Collection at UCLA Library Special Collections
Rudolf Carnap, by Mauro Murzi, at the Internet Encyclopedia of Philosophy
Related entries in the Stanford Encyclopedia of Philosophy:
- Vienna Circle, by Thomas Uebel
- Logical Empiricism, by Richard Creath
- Inductive Logic, by James Hawthorne
- Kurt Gödel, by Juliette Kennedy
- Carl Hempel, by James Fetzer
- Ernst Mach, by Paul Pojman
- Otto Neurath, by Jordi Cat
- W. V. O. Quine, by Peter Hylton
- Hans Reichenbach, by Clark Glymour and Frederick Eberhardt
- Alfred Tarski, by Mario Gómez-Torrente
Moritz Schlick Forschungsstelle (preparing the Moritz Schlick Edition)