A Catalog of Morphological Types in 10 Distant Rich Clusters of Galaxies
  We present catalogs of objects detected in deep images of 11 fields in 10 distant clusters obtained using WFPC-2 on board the Hubble Space Telescope. The clusters span the redshift range z=0.37-0.56 and are the subject of a detailed ground- and space-based study to investigate the evolution of galaxies as a function of environment and epoch. The data presented here include positions, photometry and basic morphological information on ~9000 objects in the fields of the 10 clusters. For a brighter subset of 1857 objects in these areas we provide more detailed morphological information. 
Ian Smail, Alan Dressler, Warrick J. Couch, Richard S. Ellis, Augustus   Oemler, Harvey Butcher and Ray M. Sharples