We gratefully acknowledge support from:

• The Topology Program of The National Science Foundation.
• The University of Maryland Mathematics Department.
• The Math Department's Vertical Integration Grant for Research and Education from the National Science Foundation.
• The Maryland Center for Undergraduate Research. (Many of our members participated in the Undergraduate Research Assistant Program, and have given presentations in the University's Undergraduate Research Day.)
• Mrs. Jeanette Greenberg for her generous donation of many books from the private library of the late Professor Leon Greenberg.

Geometry Lab