Hi, Elaine! I am the newbiest of SQL report newbies, but I tend to "speak MARC21," and found a different report on the Koha Wiki that I was able to tweak and it seems to work in our catalog to retrieve all bibs with a Leader position 06 value of "a:" SELECT biblionumber, title, author, ExtractValue(metadata,'//leader') AS "Leader Field", SUBSTRING(ExtractValue(metadata,'//leader'),7,1) AS "Position05" FROM biblio LEFT JOIN biblio_metadata USING (biblionumber) WHERE SUBSTRING(ExtractValue(metadata,'//leader'),7,1) = 'a' If you change that final little 'a' to, e.g., 'e' you get all the cartographic resources. The "7" somehow gets you position 6, and "6" would get you position 5 in the Leader...somehow. Cheerio! h2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Ms. Heather Hernandez (she, her, hers) Technical Services Librarian San Francisco Maritime National Historical Park Research Center 2 Marina Blvd., Bldg. E, 3rd floor, San Francisco, CA 94123-1284 415-561-7032, heather_hernandez@nps.gov<https://webmail.lmi.net/src/compose.php?send_to=heather_hernandez%40nps.gov> Library catalog: http://keys.bywatersolutions.com/