Poster from Galleria Futurista, Via del Tritone, Roma, announcing a “Grande convegno Futurista” with Folgore, D’Alba, Altomare, Balla, Sironi, Galli, Sprovieri, Depero, F. S. Stevens, Prampolini, Schmalzigaug, Giannattasio. Domenica, no date. [818-3]