File talk:2021.jpg
[http://www.nga.gov/content/ngaweb/research/casva/research-projects.html A Project of the National Gallery of Art, Center for Advanced Study in the Visual Arts ]
Image in this copy is folded: http://hdl.handle.net/2027/mdp.39076000297080?urlappend=%3Bseq=343
See description on page. 293
See 2021_detail