Mockūnas compiled and edited several books that discussed an array of cultural topics: Žodžiai ir prasmė (Words and Meaning, 1982), A. Škėmos Raštai (The Works of A. Škėma, 1985), and Pavargęs herojus (Tired Hero, 1997), which discussed the Lithuanian resistance against the Soviet Union in the aftermath of World War II, Laisvės horizontai (Horizonts of freedom) 2001 together with Aleksandras Štromas and Tomas Venclova.