 The Perrier family's informal soirées, increasingly influential as time progressed, were at last formally baptized in the first hours of the year 1930, when New Year's Eve guests officially founded the artistic salon of R-26 (‘R’ for Robert Perrier and ‘26’ for 26 Rue Norvins).Among these founding members was painter Georges Vantongerloo, who that night designed the salon's iconic Cubist shield.After 1930, R-26's membership steadily grew.