We present a measurement of the (W + \geq 1 Jet)/(W Inclusive)
cross section ratio, R_10, in W -> e nu events for jet E_T thresholds ranging
from 15 to 95 GeV.  Using roughly 100 pb^-1 of data from the sqrt s = 1.8 TeV
ppbar collisions at the Fermilab Tevatron Collider, we compare the measured
values of R_10 to LO and NLO QCD predictions.  Comparisons are made for both
0.4 and 0.7 jet cone clustering.  Good agreement between data and theory is
observed over a large range of jet E_T thresholds fore both cone sizes.