This article discusses the problem of orphan manuscripts and writings in the collection of documents deposited with the Jagiellonian University. The author mentions the difficulties in the access to this heritage, due to the unclear status of these works. In this context she analyzes and presents biographies and views of all Jewish philosophers who received Ph.D. degree at the Jagiellonian University in the years 1918 through 1939, many of whom probably did not survive World War II.