High Quality Content by WIKIPEDIA articles! The Grand Central Art Galleries were the exhibition and administrative space of the nonprofit Painters and Sculptors Gallery Association, an artists` cooperative established in 1922 by Walter Leighton Clark together with John Singer Sargent, Edmund Greacen, and others. Artists closely associated with the Grand Central Art Galleries included Hovsep Pushman, George de Forest Brush, and especially Sargent, whose posthumous show took place there in 1928.