Some of Raphael’s Preparatory Drawings for Parnassus
aka, the Poetry Wall in Stanza della Segnatura in the Raphael Rooms in the Vatican

To see another Raphael Drawing for Parnassus, pen and brown ink, c. 1511, visit the British Museum in London

To see more Raphael drawings, I recommend Raphael: the Drawings from the Ashmolean Museum (FYI, this site is an Amazon Associate, so if you buy the book through the link above this site receives a small commission at no extra cost to you!)