In the summer of 1949, Susan Weil introduced her partner Robert Rauschenberg to the process of exposing blueprint paper. What began as a playful experiment soon transformed into a striking series of large-scale works. Though the couple would eventually part, Rauschenberg continued to work with cyanotypes throughout his career, even as Weil’s authorship quietly faded from the accepted narrative. The book stands not only as an archive of historically significant works, but as a record of a relationship and creative partnership.