Bridget L. Johnson-Heckbert
					104 Washington Street
					Pittsburgh, PA 15218


Dr. David S. Touretzky
Computer Science Department
Carnegie Mellon University
Pittsburgh, PA 15213



Dear Dr. Touretzky:

For t-shirt design and production services provided to the Center for
the Neural Basis of Cognition, the amount due is $350.00.

My social security number is 144-56-4237.







					Sincerely,




					Bridget L. Johnson-Heckbert