My smallest pocket sketchbook is filled with quick notes and impromptu sketches done while wandering the galleries of the Hirshhorn Museum, the Phillips Collection, the Freer Gallery and the National Gallery of Art in Washington, D.C. The sketchbook is approximately the size of the D.C. Metro ticket that is affixed to the cover. 2" x 3.5" Medium: Various pens and watercolor washes. Collection: Rare Books and Manuscripts, Yale Center for British Art, New Haven, CT.