15. September 2010 15:38
Federal case files that are closed are transferred from the Courts to the National Archive. From the 1960s onwards, regional archives store transcripts, pleadings, exhibits, dockets, and any other proceedings from the Federal Courts of Appeal, Bankruptcy Court, Civil and Criminal Courts.
Arizona Federal case files are stored at the National Archive center in Riverside, CA. For a fee anything can be obtained and delivered to the legal researcher. You can also gumshoe your way to Riverside to access the case archive in person. This same system is administered by the National Archives nationally so closed case files from any jurisdiction can be accessed.
See NARA Info: http://www.archives.gov/pacific/frc/riverside/court-records
Here is an example of legal research not typically conducted online, but some of these documents are being scanned and added to databases like Westlaw.