Hello, We are embarking on an authority control project for the first time with our Horizon (v.7.4.1) database. In order for BackStage to assess our records, we need to provide them with a sample of about 1000 bibs that are representative of the database. I'm looking for BackStage clients that are also SirsiDynix Horizon users, and who have gone through the export/import process with Horizon bibs. We're specifically looking for some suggestions on how to export the 1000 sample bibs from Horizon along with any pitfalls to avoid. The Hz export function seems to work optimally only with small batches of 200 of fewer records. Anything more will have to be done with the Horizon utility, Marcout, which is not a problem in itself. The complication is that what we need is not so simple when the criteria is not as straightforward as selecting a bib # range (e.g. exporting bib # 1001 to 2001). Our export criteria includes an exclusion of all acquisitions records and a small batch of bibs with Dewey call numbers. We would also like to generate a random number of bibs after the exclusions, or at least a representative sample of the database with x % of book bibs, x% of serials bibs etc. Total bib count in our database is approximately 250,000. We could contract SirsiDynix to take care of all the export/imports in the authority control project, but with a very tight budget, we'd like to try to do it ourselves first. If anyone would be willing to speak to me, please email me directly with your contact info and a convenient time for me to call. We're in the Pacific Northwest, and will be on Pacific Standard Time. With thanks in advance, Shirley Shirley Lee Assistant Librarian, Systems, Acquisition & Interlibrary Loan Norma Marion Alloway Library | Trinity Western University 7600 Glover Road Langley, BC V2Y 1Y1 shirley.lee@twu.ca<mailto:shirley.lee@twu.ca> | Tel: 604-513-2121 x3914 Fax: 604-513-2063 www.twu.ca/library<http://www.twu.ca/library>