O4 Ames Room with Birgit and Ingrid Brill 1.jpg

O4 Ames Room with Ingrid and Birgit Brill 2.jpg

O4 Anamorph 1.jpg

O4 Anamorph 2.jpg

O4 Anamorph 2a.jpg

O4 Art Work with Distorted Perspective.jpg

O4 Cartoon B.C. Railroad Track Illusion.jpg

O4 Cartoon B.C. Shadows 1.jpg

O4 Cartoon B.C. Shadows 2.jpg

O4 Cartoon B.C. Shadows 3.jpg

O4 Cartoon B.C. Shadows 4.jpg

O4 Cartoon B.C. Shadows 5.jpg

O4 Cartoon CLOSE TO HOME M. C. Escher as a Child.jpg

O4 Corner Illusion.jpg

O4 Einstein-Monroe.jpg

O4 Escher Ant Moebius.jpg

O4 Escher Spiral Staircase Illusion.jpg

O4 Illusion Dolphins.jpg

O4 Impossible Bush Trim.jpg

O4 Impossible Figure 01.jpg

O4 Impossible Figure 02.jpg

O4 Impossible Figure 03.jpg

O4 Impossible Figure 04.jpg

O4 Impossible Figure 05.jpg

O4 Impossible Figure 06.jpg

O4 Impossible Waterfall Escher.jpg

O4 Impossible Waterfall Three Dimensional Model 1 with Builder.jpg

O4 Impossible Waterfall Three Dimensional Model 1.jpg

O4 Opposites Good-Evil.jpg

O4 Opposites Me-You.gif

O4 Opposites Optical-Illusion.gif

O4 Opposites Teach-Learn.jpg

O4 Optical Illusion 01.jpg

O4 Optical Illusion 02.jpg

O4 Optical Illusion 03.jpg

O4 Optical Illusion 04.jpg

O4 Optical Illusion 05.jpg

O4 Optical Illusion 06.jpg

O4 Optical Illusion 07.jpg

O4 Optical Illusion 08.jpg

O4 Optical Illusion 09.jpg

O4 Optical Illusion 10.jpg

O4 Optical Illusion 11.jpg

O4 Optical Illusion 12.gif

O4 Optical Illusion 13.gif

O4 Optical Illusion 14.jpg

O4 Photograph Railroad Track Illusion.jpg

O4 Spiral Staircase.jpg

O4 Staircase Illusion.jpg

O4 Three Dimensional Quilt.jpg

O4 Trapezoidal Window Demonstration at UM Lec-Dem.jpg

O4 Walk-in Box Demonstration at UM Lec-Dem.jpg