WFPC2 Photometry of Outermost-Halo Clusters Harris, W. E. ; Stetson, P. B. ; Bolte, M. ; Bell, R. ; Bond, H. ; Fahlman, G. G. ; Hesser, J. E. ; McClure, R. D. ; Richer, H. ; Vandenberg, D. A. ; van den Bergh, S. Abstract Publication: Calibrating Hubble Space Telescope. Post Servicing Mission Pub Date: 1995 Bibcode: 1995chst.conf..283H