  We report a measurement of the W boson mass based on an integrated luminosity
of 82/pb from p-pbar collisions at sqrt(s) = 1.8 TeV recorded in 1994-1995 by
the D0 detector at the Fermilab Tevatron. We identify W bosons by their decays
to e-nu, where the electron is detected in the forward calorimeters. We extract
the mass by fitting the transverse mass and the electron and neutrino
transverse momentum spectra of 11,089 W boson candidates. We measure Mw =
80.691 +- 0.227 GeV. By combining this measurement with our previously
published central calorimeter results from data taken in 1992-1993 and
1994-1995, we obtain Mw = 80.482 +- 0.091 GeV.
