The file of Robertas Grigas is in seven volumes. They include many documents on his surveillance, his letters and manuscripts, as well as his diary from 1978 and 1979.

From 1976, Robertas Grigas (b. 1960) participated in the activities of the underground organisation Friends of the Eucharist. From 1978 to 1982, he studied the German language and literature at Vilnius Pedagogical Institute. He was one of the dissidents who took part in publishing and disseminating the underground journal Vytis, and he collaborated with The Chronicle of Lithuanian Catholic Church. During his military service in the Soviet army, he publicly refused to swear the oath of allegiance to the Soviet state. From 1985 to 1988, he studied in an underground seminary for priests, and in 1987 he was secretly ordained a Catholic priest. He published his collection of poetry Benamės svajos (Homeless Dreams, 1985) secretly, and has also published the book of memoirs Rekrūto atsiminimai (Memoirs of a Recruit, 1993).