The top search in the lepton plus jets channel with the Collider
Detector at Fermilab (CDF) is presented.  The analysis uses a 67 pb^-1 data
sample of ppbar collisions at sqrt s = 1.8 TeV.  Soft lepton tagging (SLT)
and secondary vertex tagging (SVX) of b jets are used to reduce backgrounds.
A significant excess of events over expected backgrounds is seen, and together
with the excess of observed events in the dilepton (DIL) channel, firmly
establish the existence of the top quark.  Combining all channels, the ttbar
production cross section is measured to be sigma_ttbar = 7.6^+2.4_ -21.0 pb.
The Branching of top to Wb is measured to be Br(t -> Wb) =
0.87^+0.13_ -0.30(stat) ^+0.13_ -0.11(syst).