Sources give differing reports of what happened next. Wiesenthal's autobiographies contradict each other on many points; he also over-dramatised and mythologised events. One version has Wiesenthal opening an architectural office and finally being admitted to the Lwów Polytechnic for an advanced degree. He designed a tuberculosis sanatorium and some residential buildings during the course of his studies and was active in a student Zionist organisation. He wrote for the "Omnibus", a satirical student newspaper, and graduated in 1939. Author Guy Walters states that Wiesenthal's earliest autobiography does not mention studies at Lwów. Walters quotes a "curriculum vitae" Wiesenthal prepared after World War II as stating he worked as a supervisor at a factory until 1939 and then worked as a mechanic in a different factory until the Nazis invaded in 1941. Wiesenthal's 1961 book "Ich Jagte Eichmann" ("I Hunted Eichmann") states that he worked in Odessa as an engineer from 1940 to 1941. Walters says that there is no record of Wiesenthal attending the university at Lwów, and that he does not appear in the "Katalog Architektów i Budowniczych" (Catalogue of Architects and Builders) for the appropriate period.