We report on measurements of the Upsilon(1S), Upsilon(2S) and
Upsilon(3S) differential, (d^2 sigma/dP_t dy)_y=0, and integrated cross
sections at sqrt s = 1.8 TeV using a sample of 16.6 +/- 0.6 pb^-1 collected
by the Collider Detector at Fermilab.  The three resonances were
reconstructed through the decay Upsilon -> mu^+mu^-.  Comparison is made to
a leading order QCD prediction.