Key:

• Rule numbering and titles taken from DCRM(B) first printing 
• Module code in parentheses before rule number indicates location of original text to be changed; module code after description of needed change indicates that the change has been made in that module; module code after plus "n/a" means change has been verified as not applicable to that module
• Because subsequent printings are based on an entirely new text supplied by BSC but Cataloger's Desktop is updated manually, there is occasionally a discrepancy between print and online that is to be noted and CD to be given the correction
• Additions to text are shown underlined; deletions are shown struck through
• Codes:
• {B, B1}, B2, B3, B4 = Books, first through fourth printings; "not done" indicates that the intended change was inadvertently not made 
• C = Cartographic
• G = Graphics
• M = Music
• MSS = Manuscripts
• S = Serials
• CD = Cataloger's Desktop

1. (B): Changes from DCRB, 2^nd paragraph: "Another notable change related to more rigorous transcription principles is that roman dates expressed as roman numerals in the source are transcribed as such roman rather than as arabic numerals." (per message from Kate James, LC, 2/20/14, that "Roman dates would be dates using a Roman, pre-Julian calendar (e.g., A.U.C. DCX)")(M)C n/a) (MSS n/a) (B4)