Bradt, H.V. and Moore, G. and Braes, L.L.E. and Miley, G.K. and Forman, W. and Kellogg, E. and Hesser, J.E. and Kunkel, W.E. and Hiltner, W.A. and Hjellming, R. and Pel, J.W. and Thomas, J. and vanden Bout, P. and Wade, C. and Warner, B.
Feigelson, E.D. and Bradt, H. and McClintock, J. and Remillard, R. and Urry, C.M. and Tapia, S. and Geldzahler, B. and Johnston, K. and Romanishin, W. and Wehinger, P.A. and Wyckoff, S. and Madejski, G. and Schwartz, D.A. and Thorstensen, J. and Schaefer, B.E.