Parallaxes for star forming regions in the inner Perseus spiral arm
  We report trigonometric parallax and proper motion measurements of 6.7-GHz
CH3OH and 22-GHz H2O masers in eight high-mass star-forming regions (HMSFRs)
based on VLBA observations as part of the BeSSeL Survey. The distances of these
HMSFRs combined with their Galactic coordinates, radial velocities, and proper
motions, allow us to assign them to a segment of the Perseus arm with ~< 70
deg. These HMSFRs are clustered in Galactic longitude from ~30 deg to ~50,
neighboring a dirth of such sources between longitudes ~50 deg to ~90 deg.
