anchor.diff:  Bertrand Halperin,210
   Bessie Delany,3
   Beth Shapiro,190
  -Betty Harris,
  +Betty Harris,113
   Betty Hay,3
   Betty Siegel,33
   Bettye Washington Greene,
  
positive.code: Russell L. Mixter,
  Russell Mittermeier,308
  Rutger Sernander,
  Ruth Behar,
  Ruth Byrne,
  Ruth Frances Bishop,
  Ruth Hall,483
  
negative.code: Peter Huttenlocher,
  Peter J. Barnes,1.370
  Peter J. Denning,546
  Peter J. Fos,32
  Peter Jephson Cameron,12
  Peter Karter,
  Peter Keevash,
  