  We present medium-resolution spectroscopy of a sample of stars in the second
Galactic quadrant selected from the literature because their colours suggest
that they are moderately-reddened early-type stars at very large distances.
  From the derived spectral types and observed colours, we calculate distances
to all these objects. For a sizable fraction of our sample, we find distances
well in excess of what is expected for Perseus Arm objects, even allowing for
rather generous errors. In the interval l=150degr-180degr, there is a large
number of objects with distances in excess of 4 kpc, which are likely tracing
the Outer or Cygnus Arm. In particular, we find that the association Cam OB3 is
placed on this Arm. Based on our results, the extent and definition of the
associations Cas OB4 and Aur OB2 need to be reevaluated.
