He also exchanged letters with numerous people who sought his correspondence. Contents include speech files, handwritten notes, memoranda, annotated briefings, schedules, correspondence, and visual materials. He also kept copies of all incoming and outgoing correspondence. Kaczynski's correspondence and other personal papers were also auctioned. These were men suited to dealing with petitions, requests, correspondence, legal affairs, and foreign embassies. Studies of the Vatican archives and international diplomatic correspondence continue. The archive comprises notebooks, drafts of Dylan lyrics, recordings, and correspondence. Selections from their correspondence have been published. John Beckley also created copies of the correspondence. Clarke's email correspondence with Hyams was published in 1984. He never had a secretary and took care of all his correspondence alone. The clay tablets tell of myths, epics, rituals, medical and administrative matters, and also correspondence. All elements were the subject of considerable correspondence and fussing over by Tolkien. Several variants of CA are available including detrended correspondence analysis and canonical correspondence analysis. In early 1835, wary Texians formed Committees of Correspondence and Safety.