A couple posts back, I asked if anyone knew the two images with incorrect mirrored reflections. The first one, the one my students drew a detail of as part of their test, is Ingres' Madame Moitessier. The students drew her hand on a grid; not a hard project, but it does tell me if they understand the concept. The second image is Manet's Bar at the Folies-Bergerè. If you know of others, feel free to post them in hte comment section.