Correspondence of Stanisław Lem

• 2021: ', selection of Lem's letters from 1951-1990, prepared and commented by Wojciech Orliński.
• 2018: Listy i rozmowy is a selected correspondence between Stanisław Lem, the poet Ewa Lipska, and Lem's son, Tomasz Lem, as well as records of conversations between Lem and Lipska in early 2000s.
• 2013: ',, 736pp, is a selection of Stanisław Lem's letters to his translator Michael Kandel during 1972–1987. It includes introduction by Jerzy Jarzębski and comments by Maciej Urbanowski.
• 2011: Stanisław Lem, Sławomir Mrożek, ',, is a selection of correspondence between Lem and Mrożek from 1956 to 1978.
• 2002: ' is a collection of letters written by Stanisław Lem from 1955 to 1988. The selection was carried out by Jerzy Jarzębski, who also wrote the afterword. The book includes brief biographical notes about the addressees and an index of names. The collection contains the author's correspondence with various institutions of the Polish People's Republic and letters written to friends, including: Helena Eilstein, Antoni Słonimski, Wiktor Woroszylski, Jerzy Jarzębski, Daniel Mróz, Szymon Kobyliński, Michael Kandel, and biophysicist prof. Władysław Kapuściński
• 2024:, a selection of the 1972-1984 correspondence between Lem and Ursula K. Le Guin, translated from English by Lems's son Tomasz Lem. The title comes from the line "And say my glory was I had such friends" by William Butler Yeats from his poem "The Municipal Gallery Revisited".