  Interpolating fields, used to excite hadrons from the QCD vacuum in
nonperturbative field-theoretic investigations of hadron properties, are
explored with an emphasis on unconventional nucleon interpolators. The QCD
continuum model for excited state contributions to QCD correlation functions is
a central element in extracting the physics contained in these alternate
correlation functions. The analysis confirms the independence of nucleon
properties obtained from different interpolating fields. However, this
independence comes about in a trivial manner. These results provide a
resolution to the long standing debate over the optimal nucleon interpolating
field to be used in QCD Sum Rule analyses.
