Moritz Schlick and Vienna Circle Foundation
- Introduces the archive of the Vienna Circle Foundation in Haarlem, Netherlands, particularly regarding the works of the philosophers Moritz Schlick and Otto Neurath.
- http://www.moritzschlick.nl/

Wikipedia: Vienna Circle
- Article from this openly-edited encyclopedia.
- http://en.wikipedia.org/wiki/Vienna_Circle

Internet Encyclopedia of Philosophy: Vienna Circle
- Article by Mauro Murzi.
- http://www.utm.edu/research/iep/v/viennaci.htm

Institute Vienna Circle
- Dedicated to continuing the Circle's work in the philosophy of science. In German and English.
- http://www.univie.ac.at/ivc/