  The morphologies of wide-angle tailed (WAT) radio sources (edge-darkened,
C-shaped, FR I radio sources) are the result of confinement and distortion of
the radio lobes by the dense X-ray-emitting gas in clusters or groups of
galaxies. These radio sources are easily seen at high redshifts (z~1) in
short-exposure images from the Faint Images of the Radio Sky at Twenty-cm
(FIRST) survey. Using a sample of approximately 400 WAT sources from the FIRST
survey, we have discovered a number of high-z clusters. Here, we present the
highest-z cluster found so far using this method: 1137+3000 at z=0.96. We
include photometric and spectroscopic results. Ten galaxies are confirmed at
the cluster redshift, with a line-of-sight velocity dispersion of 530 +190/-90
km/s, typical of an Abell richness class 0 cluster.
