You have other options. You can leave field 046 alone, since the information available to you is imprecise, and embed those dates in a 678 field where a later cataloger with more information can use them to confirm that they have found an NAR for the right person. Or, simplest, just give two 670 citations, one for each of the works, and the dates in the citations serve the same purpose. Christopher H. Walker Serials Cataloging Librarian Penn State's representative to the CONSER Operations Committee Member at Large, ALCTS CRS Executive Committee 2013/2016 126 Paterno Library The Pennsylvania State University University Park, PA 16802-1812 (814) 865-4212 [log in to unmask] From: "Michael Borries" <[log in to unmask]> To: [log in to unmask] Sent: Monday, June 13, 2016 5:04:01 PM Subject: [PCCLIST] 046 for "Active" dates Dear all, We are creating an authority record for Urquhart Cawley, a composer who wrote Song of the Seraphs and Blessed Are the Dead. The only dates we can find for him are the copyright dates for Song of the Seraphs, 12-21-1925 for the original copyright, and 1-29-1953 for the copyright renewal. It is my understanding that we can record at least the years as “active” dates. Since the name is unique (and rather unlikely to become non-unique), I don’t plan on using the dates in the heading, lest better information be found later. But what should be recorded in the 046? Active dates are by their nature approximate. So should we record a day and a month? Or should we record only the years, perhaps even with a spacing tilde? After all, even though we have the dates of copyright, we can reasonably assume that he was “active” sometime before and sometime after these dates. Or should we just give the exact dates? I am probably overthinking this. The examples and instructions in RDA and DCM Z1 don’t seem to discuss a similar situation. All thoughts appreciated. Michael Michael S. Borries Cataloger, City University of New York 151 East 25 th Street, 5 th Floor New York, NY 10010 Phone: (646) 312-1687 Email: [log in to unmask]