About
The Union List of Item Selections (UNION-L) are text (.txt) files listing all depository library selections. The first column contains item numbers, and the second column lists the Federal depository library numbers of libraries that select them. Files are updated weekly and posted on Fridays.
Comma Delimited Format (cd-ddis.zip)
A compressed file containing the item selection data for all depository libraries in a comma delimited text file
Fixed Field Format (ff-ddis.zip)
A compressed file containing the item selection data for all depository libraries in a fixed field file
Screenshot of some Federal depository libraries selecting U.S. Geological Survey’s Scientific Investigations Maps (series) listed in the comma delimited text file.