The COS B source 2CG 135+01 has been observed by the EGRET instrument
on 10 different occasions during the first similar to 52 months of the
Compton Gamma Ray Observatory mission. The source is detected in all
but one of the observations. For that one, the exposure was inadequate
. The only likely source that is spatially coincident with the gamma-r
ay position is the radio source GT 0236+610/LS I +61.303 degrees. Howe
ver, there is no compelling evidence for time variations in the gamma-
ray emission associated with the radio outbursts from GT 0236+610. Spe
ctral determinations on a timescale of a few days also give no strong
evidence for a spectral variation associated with the radio emission o
f GT 0236+610. Such fluctuations might be expected based on models inv
olving a compact object in an elliptical binary orbit about a massive
star. The search for correlations simultaneous with the 8.4 GHz radio
outbursts were supported by coordinated observations with the Madrid D
eep Space Network during one of the exposures and by Green Bank Interf
erometer observations on two others. Although there is some possible v
ariability in the gamma-ray flux, it is not clear that it is related t
o the radio phasing.