The reader's attention is invited to the correspondence of the philosophers Mic. Lifshitz (1905–1983) and D. Lukács (1885–1971). It dates back to 1931–1970. and includes all known letters. Their originals are in the D. Lukács Archive (Hungary). With rare exceptions, letters are being introduced into scientific circulation for the first time. The appendix to the correspondence contains 12 documentary materials characterizing the official historical background against which this correspondence unfolded. Most of the application materials are also published for the first time.