Smith, Pamela Colman and William Macbeth. The Service and the Loyalty I Owe, in Doing It Pays Itself, Macbeth, Act 1, [Scene 4] P.C.S. 1 print : hand-colored lithograph, 1898. Folger Shakespeare Library. Open: Folger Shakespeare Library. Artstor, JSTOR, https://jstor.org/stable/community.25246167. Accessed 19 June 2024.