Chronicles Booster Packs can be bought from the Chronicles Vendor in Theed or Coronet for 20 Silver Tokens or are given to a player as they reach various levels within the Chronicler Career Progression.
Each Booster Pack contains random Relics. The Chronicles Vendor also sells "Go To" Booster Packs and "Comm Message" Booster Packs which only contain random "Go To" and "Comm Message" Relics respectively.