There's been some dispute on Adams inking credit until Bruno Andreacchi found Roy Thomas' statement of Adams inks in X-Men # 60 letters section. The original indexer credited Neal Adams along with Carl Gafford and Michael Evans. Steve Whitaker and Bob Ford credited Tom Palmer.
Romita alterations on Cyclops figure per Nick Caputo.
Sources for letters credits are (Rosen only) The Marvel Comics Index (Olshevsky 1981); (Adams and Rosen) The Official Marvel Index to the X-Men (Olshevsky 1987), The Official Marvel Index to the X-Men (Ward 1994), and Official Index to the Marvel Universe (Vandal et al. 2009).
Letters from readers - George D. Schaetzle, M. Brogdon, Michael Fortier, Kent Roberts, Greer Watson, John Monhomme and Todd Freeman, Jr. Includes three panels reproduced (sans dialogue and captions) from #54.