Why did early modern architects continue copying drawings long after the invention of print should have made such copying obsolete? Carolyn Yerkes answers that question in a fresh investigation into the status of architectural drawing in the sixteenth and seventeenth centuries. Her book explores a vast network of manuscripts and drawings that each have information about ancient and modern buildings—including the Pantheon and Saint Peter’s—that is not known from any other sources. The drawings also show how the information was recorded, transferred, and analyzed by others. Yerkes examines the nature of architectural evidence to understand how Renaissance architects used images to explore structures, create biographies, and write history.