Some of Raphael’s Preparatory Drawings for his Disputation of the Holy Sacarment
aka, his Religion Wall in Stanza della Segnatura in the Raphael Rooms in the Vatican

To see another Raphael Study for Lower Left Part of Disputa visit the Albertina in Vienna

To see one of Raphael’s studies of St. Paul for the Disputa, visit the Ashmolean in Oxford, England

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!)