After the war, Sletten returned to his old job in
Stavanger Aftenblad, but quit after a few months, following a dispute over the appointment of
Christian S. Oftedal as editor-in-chief. During Sletten's period as editor
Verdens Gang developed into one of Norway's leading newspapers, more or less trebling its circulation. He was also a member of the
Norwegian Language Council and of the board of the
Norwegian Agency for Development Cooperation. As a pensioner he wrote
Pressestøtte og pressefridom ('Press Support and Freedom of the Press', 1979), a book about the Norwegian
press support. He also biographed Christopher Bruun in 1986; in 1964 he had issued a collection of Bruun's letters. He was decorated as a Knight, First Class of the
Royal Norwegian Order of St. Olav and of the
Order of the Lion of Finland. He died in December 1984 in Oslo. ==References==