The Polish-Jewish novelist, poet and translator Józef Wittlin (1896–1976), author of the classic Sól ziemi (1935, English Salt of the Earth, 1939), lived in Lwów (until 1918 Lemberg, today Lviv) for about 20 years until 1922. Thereafter, whether in Poland or from 1939 in exile first in France, then the United States, he cherished his memories of this architecturally distinguished and multiethnic city, publishing his memoir Mόj Lwów My Lwów with an exile press in New York in 1946 (English translation 2016). The article draws on archival documents from Poland, the United Kingdom and the United States and other published sources to give a history of the book’s conception and reception, above all in the exiled Polish diaspora, and makes a case for Mόj Lwów’s enduring significance as a work of imaginative reconstruction written in exile.