Cercle de Vienne
In 1929 the Vienna Circle made its first public appearance under this name – invented by Neurath – with the publication of its manifesto "Wissenschaftliche Weltauffassung. Der Wiener Kreis" ("The Scientific Conception of the World. The Vienna Circle" also known as "Viewing the World Scientifically: The Vienna Circle") The pamphlet is dedicated to Schlick, and its preface was signed by Hahn, Neurath and Carnap.