{"value"=>"Many of the audio and video items have accompanying material such as arrangement notes, mixing notes, track sheets, and other paper material associated with the recordings. Additionally, scans of tracklists or other information from tape boxes are available from the Music Division upon request. These items are noted with \"additional scanned resource available upon request.\" In addition to a 6-digit identification number assigned by the library, many of the audio and video items bear a second number assigned by Russell's estate. The estate supplied the Music Divison with its own catalog of Russell's recordings, available upon request."}