Once again, I am offering my "Annotated Guide to the Brookhaven Protein Data Bank" to the readers of the computational chemistry list. This file includes listings for all of the files in the January, 1994 release. The main additions this year are a complete listing of all of the lysozyme files, a better organization of the DNA files, and, most importantly, structure classifications for all of the protein chains in the data bank. There is also a companion file which lists all of the sequence relations among the individual protein chains. This file is called the "Sequence Relations" file. Once again, if there are errors, which there most certainly are bound to be when one is dealing with 2327 files, I would appreciate being informed of such. Please cite the work as suggested in the files if you use it in your own work. A write up of the work has been submitted for publication and may appear later this year. If so, the suggested citation will change. Laura Walsh Beckman Institute, University of Illinois lwalsh@silibio.ncsa.uiuc.edu