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   72053
   The identity of the persistent, high-energy gamma-ray sources in the
   Galactic plane remains a mystery. The most likely scenario is a
   population of middle-aged pulsars, many of which could be radio quiet
   like Geminga. We have an ongoing program of ROSAT, VLA, and optical
   observations of selected EGRET error circles at intermediate Galactic
   latitude. For one of these fields, at (l,b)=(106,+3), our complete
   census of X-ray and radio sources reveals a remarkable association
   between a radio shell with unique properties, and a compact X-ray
   source. It may be a pulsar with a wind-blown nebula. An ASCA
   observation is needed to determine whether or not this source has a
   hard X-ray spectrum like that of other gamma-ray pulssars and, ideally,
   to find its pulsations.
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