  We have measured the spectrum of UHE cosmic rays in monocular mode using
separately both detectors the High Resolution Fly's Eye experiment. We describe
the two detectors and the basic methods of analysis, and we present our
measured spectra. We compare these spectra with that produced by an
astrophysical source model with galactic and uniformly distributed
extra-galactic sources. We also compare our spectra to the spectra produced by
the AGASA experiment.
