Ta daaaa! I’m happy to introduce to you Descriptive Cataloging of Rare Materials (Graphics)—DCRM(G) for short—the latest publication in a suite of manuals that provides descriptive cataloging rules for primary source materials in special collections libraries. The official announcement will be made by the Rare Books and Manuscripts Section of the Association of College and Research Libraries jointly with the Library of Congress, but I figure it’s okay to leak the news to Collation readers since I led the editorial team. 1 Allow me to show off some of the spiffy new rules, using examples from the Folger collection.
From the point of view of researchers, one of the most valuable rules is an adaptation of the “please explain your work” instruction from high school math tests. Consider Park’s Shakspere Characters, for example:
The print is undated, so the cataloger wrote “[ca. 1840]” in the Hamnet record. 2 Previously, he or she could have stopped there, leaving no clue as to the source of the date except implicit expertise. DCRM(G) doesn’t let catalogers off the hook so easily: “Indicate the basis for the conjecture in a note.” In this case, the note reads, “Date based on clothing style.” It could equally legitimately have said “Date based on wild guess.” At the very least, a date could be given as “[not after 2013]” with the note “Date based on year of cataloging.”Because DCRM(G) is meant to create records that will be compatible with records for rare books, some instructions strike graphic materials catalogers as waaaaaay more detailed than necessary, but they’re fascinating once you get to know them. Consider the instructions for changing “V” to either “u” or “v” when converting from uppercase to lowercase.

Jan van der Straet, “Ser, siue, Sericus vermis” from Nova reperta. [Antwerp] : Philippe Galle, [ca. 1591] (ART Vol. f81 no. 8)
0G2.2. Letterforms I, V, i, j, u, and v. If the rules for capitalization require converting I or V to lower case or i, j, u, or v to upper case, follow the pattern of usage in the text to determine which letterform to use in the transcription….
Source:
SER, SIVE SERICVS VERMIS
Transcription:
Ser, siue, Sericus vermis
(Comment: Text in the image caption shows consistent use of v for vowels or consonants in initial position and u for vowels or consonants in medial position, e.g., “vermis,” “vrbe,” “oua,” and “aurea”)
DCRM(G) also uses rare book cataloging instructions for expanding brevigraphs, the special marks of contraction held over from manuscript tradition:

Cornelis Metsys. Henricus dei gra[tia] rex Anglie. [Antwerp?], 1548 (ART 252- 711 (size S))
So, if you want to download a PDF copy of the manual in order to keep Appendix G handy, go right ahead. The entire manual is available for free at http://rbms.info/dcrm/dcrmg/. It’s also excellent for pub trivia.
- The others on the team were Ellen Cordes, Head of Technical Services, The Lewis Walpole Library; James Eason, Principal Pictorial Archivist, The Bancroft Library, University of California, Berkeley; Mary Mundy, Cataloging Specialist, Prints & Photographs Division, Library of Congress; Lenore M. Rouse, Curator, Rare Books & Special Collections, The Catholic University of America; Joe Springer, Curator, Mennonite Historical Library, Goshen College; and Helena Zinkham, Chief, Prints & Photographs Division, Library of Congress.
- Square brackets indicate that the information was not transcribed from the item, and the abbreviated form of the word “circa” indicates that the date is approximate.
- There are some exceptions when it comes to ligatures, but this is getting to be too long a story.
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