De Zayas had both a passion and a vision that matched with Stieglitz's personality, and soon he was helping define what the aesthetics of this new generation of art would be. His work was exhibited at the gallery, he wrote several articles for "Camera Work", and he introduced Stieglitz to some of the newest European artists by serving as a guide and interpreter when Stieglitz would travel to Europe. His interest in African tribal art and admiration for Picasso's Cubist work convinced Stieglitz to hold groundbreaking exhibitions of these subjects at 291.