- Constance Rosenblum
- Susan Whitfield
- David Biggs
- Abdul Rahman Munif
- Milton E. Osborne
- Stephen R. Bown
- Mary Gabriel
- Maurice Collis
- Steve Kemper
- Amit Gilboa
- Gerard C. Wertkin
- Peter Janney
- Sarah Giller Nelson
- George Grosz
- Jack D. Flam
- Philadelphia Museum of Art
- Brenda Richardson
- Lee Kogan
- Michael Axworthy
- Museum of American Folk Art