The eve of the Great Depression was not an ideal time to start new magazines but Gernsback persevered. "Radio Craft" and successor titles were in print until January 2003. Gernsback decided to focus on radio magazines and added "Short Wave Craft" in June 1930 and "Television News" in 1931. "Wonder Stories" was sold to Thrilling Publications in 1936 and it was in print until 1955. "Science and Mechanics" was sold to Virgil Angerman in 1937 and it was in print until the 1970s (as late as May 1974).