We placed an order for 30 red bags from A.Rifkin Company in April 2009.
The cutouts in each bag can hold a 3x5 card with the destination branch information. Bill Hanssen in Facilities was able to print up labels for each library to use on cardstock. One side of the label had the branch library information, the other side had the Law library information.
Law does not need any red bags as they simply use bins to return books to owning locations when necessary. When owning libraries send red bags to Law, Law simply turns the label around and returns them to their owning library empty.