  We present a survey of OH maser emission towards a sample of high mass
protostellar objects made using the Nancay and GBT telescopes.OH maser emission
was detected towards 63 objects with 36 new detections. There are 56
star-forming regions and 7 OH/IR candidates. There is no evidence that sources
with OH masers have a different range of luminosities from the non-maser
sources. The results of this survey are compared with previous water and class
II methanol maser observations of the same objects. Some of the detected
sources are only associated with OH masers and some sources are only associated
with the 1720 MHz OH maser line. The velocity range of the maser emission
suggests that the water maser sources may be divided into two groups. The
detection rates and velocity range of the OH and Class II methanol masers
support the idea that there is a spatial association of the OH and Class II
methanol masers. The sources span a wide range in R, the ratio of the methanol
maser peak flux to OH 1665 MHz maser peak flux, however there are only a few
sources with intermediate values of R, 8<R<32, which has characterised previous
samples. Sources which have masers of any species, OH, water or methanol, have
redder [100um-12um] IRAS colours than those without masers. However, there is
no evidence for different maser species tracing different stages in the
evolution of these young high mass sources. Previous observations which have
shown that the OH maser emission from similar sources traces the circumstellar
disks around the objects. This combined with the sensitivity of the OH emission
to the magnetic field, make the newly detected sources interesting candidates
for future follow-up at high angular resolution.
