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• Keoki Zee described a proposed core algorithm (as retrieved 05 May 2009) in longhand. I anticipate using elements of this algorithm to extract reversible sequences from the set of available words.


• David Smith, a student at Arizona State University, published a partial solution (as retrieved 05 May 2009) that he developed in 2004 using the C++ Standard Template Library. David found a number of palindromic pangrams of 65 letters each. I am indebted to him for the observation that many palindromes can be composed from shorter reversible sequences.


• Recent work by 8steve8@gmail.com uses algorithms that reduce the search space in the same way as mine. See his "Palindrome Pangram Puzzle - A Work in Progress" (as retrieved 05 May 2009)