We summarize a search for the top quark with the Collider Detector at
Fermilab (CDF) in a sample of ppBAR collisions at square-root s = 1.8
TeV with an integrated luminosity of 19.3 pb-1. We find 12 events cons
istent with either two W bosons, or a W boson and at least one b jet.
The probability that the measured yield is consistent with the backgro
und is 0.26%. Though the statistics are too limited to establish firml
y the existence of the top quark, a natural interpretation of the exce
ss is that it is due to ttBAR production. Under this assumption, const
rained fits to individual events yield a top quark mass of 174 +/- 10(
-12)+13 GeV/c2. The ttBAR production cross section is measured to be 1
3.9(-4.8)+6.1 pb.