On Line: Drawing Through the Twentieth Century explores the radical transformation of drawing that began during the last century as numerous artists critically re-examined the traditional concepts of the medium. In a revolutionary departure from the institutional definition of drawing and from reliance on paper as the fundamental support material, artists instead pushed the line into real space, expanding the medium's relationship to gesture and form and connecting it with painting, sculpture, photography, film and dance. Published in conjunction with an exhibition at The Museum of Modern Art, On Line presents a discursive history of mark-making through nearly 250 works by 100 artists, including Aleksandr Rodchenko, Alexander Calder, Karel Malich, Eva Hesse, Anna Maria Maiolino, Richard Tuttle, Mona Hatoum and Monika Grzymala, among many others. Essays by the curators illuminate individual practices and examine broader themes, such as the exploration of the line by the avant-garde and the relationship between drawing and dance.