  We have used the KPNO 4-meter Mayall telescope to image 0.83 square degrees
of sky in six fields at high galactic latitude in six filters spanning
3000-10000\AA\ to magnitude limits ranging from 22.1 to 23.8. As a first use of
this database, we have conducted a multicolor survey for quasars. We discuss
various methods of selecting outliers in different color-color diagrams and
multicolor space that have been used to identify quasars at all redshifts from
their colors alone. We discuss the initial results of our program of
spectroscopic identification which has so far resulted in the identification of
over forty faint quasars, including one at z$>$4, a similar number of compact
narrow-emission-line galaxies, and a number of unusual and potentially
interesting stars. We use these spectroscopic results, along with extensive
simulations of quasar spectra, to study the efficiency of our candidate
selection procedures. Finally, we compare the number counts of our quasars and
quasar candidates to the expected numbers based on previous studies of the
quasar luminosity function. The agreement of our observations with these
expectations is good in most cases. However, we do estimate that our survey
contains more quasars with B$<$21 and z$<$2.3 than expected from the results of
Koo \& Kron (1988) and more z$>$3 quasars than expected from the results of
Warren, Hewett, \& Osmer (1994), both at the 3$\sigma$\ level. Additional
spectroscopic observations will be required to confirm or refute these
excesses.
