  Results are reported for the first calculation of the low-lying spin-1/2
odd-parity octet baryon masses using ${\cal O}(a^2)$ improved gluon and fermion
actions. Methods for removing even-parity ground-state contaminations from the
two-point correlation functions at zero and finite momenta are outlined. We
investigate the properties of two odd-parity interpolating fields based on the
established interpolating fields for the nucleon ground state. Isolation of the
lowest-lying odd-parity state appears to be sufficient to begin exploring
odd-parity $N \to N^*$ electromagnetic transition form factors.
