7/01  The keys for Tests 3 and 4 are now available 
      at the Noble Library Copy Center.

6/17  The key for Test 2 is now available at the
      Noble Library Copy Center.

6/09  The key for Test 1 is now available at the
      Noble Library Copy Center.

6/08  Problem P 6:48 is a misprint.  It should
      be P 6:49.

5/27  The Old Tests, with solutions, are now 
      available in the Noble Library Copy Center.