I'm also happy to report that the National Security Archive, a nonprofit based at George Washington University, recently posted an "electronic briefing book" composed of 25 Pueblo-related documents I had declassified during my research for "Act of War." You can view the collection here:
These documents make for some eye-opening reading. Among them you'll find the CIA's secret psychological profile of Pueblo Capt. Lloyd M. (Pete) Bucher; the Pentagon's contingency plan, eerily nicknamed "Freedom Drop," to use nuclear weapons against North Korean troops if they invaded South Korea during the Pueblo crisis; and the "Ball Committee" report, which secretly criticized the military's planning and execution of the spy ship mission before Defense Secretary Clark Clifford ordered all copies of it destroyed. (I discovered a draft copy of the report at the Lyndon Johnson presidential library in Texas that somehow escaped Clifford's order.)
I want to thank John Prados, a prolific author and National Security Archive fellow, for his help in assembling this document collection as well as his excellent introductory essay.