  We present the star formation histories, luminosities, colors, mass to light
ratios, and halo masses of "galaxies" formed in a simulation of cosmological
reionization. We compare these galaxies with Lyman Break Galaxies observed at
high redshift. While the simulation is severely limited by the small box size,
the simulated galaxies do appear as fainter cousins of the observed ones. They
have similar colors, and both simulated and observed galaxies can be fitted
with the same luminosity function. This is significant to the process of
reionization since in the simulation the stars alone are responsible for
reionization at a redshift consistent with that of the Gunn-Peterson trough
seen in the absorption spectra of QSO's. The brightest galaxies at z = 4 are
indeed quite young in accord with observational studies. But these brightest
galaxies are free riders - they contributed only about 25% to the reionization
of the universe at z > 6. Instead, the bulk of the work was done by dimmer
galaxies, those that fall within the 28 < I < 30 magnitude range at z = 4.
These dimmer galaxies are not necessarily less massive than the brightest ones.
