Gyylghrard's journal documented the imprisonment of the Wookiee prisoner Gyylghrard within the walls of the Kessel Correctional Facility. He used a stylus to inscribe it onto several sheets of flimsi, which he obtained from his Sullustan companion as payment for safeguarding him.
The journal described how the slave miners were treated by those in charge, and also included Gyylghrard's encounters with Moruth Doole. Moreover, it served as a rare account of the Life Day Massacre, including his own involvement. The journal's narrative concludes before he joined Dewt Kluskine's honor guard for the second time, where he used a ceremonial poleaxe to behead the warden as retribution for authorizing the massacre.
Following Gyylghrard's demise, a fellow inmate preserved the journal. It was rediscovered during New Republic General Lando Calrissian's unsuccessful endeavor to re-establish the mining endeavor.