The following were written as "official" reports for challenges from the Honeynet Project and provide examples of how to use TSK and Autopsy.
Scan of the Month #29 - Linux VMWare (September 2003)
Scan of the Month #26 - FAT 12 Floppy - Part 2 (February 2003)
Scan of the Month #24 - FAT 12 Floppy - Part 1 (October 2002)
Scan of the Month #15 - Recover a deleted Linux rootkit (May 2001)
If you have examples of how TSK or Autopsy were used in an investigation, please provide a link here.