Born: 1911 March 20 in Illinois, United States
Died: 1991 July 18 in San Diego, California, United States
Biography: A former assistant to cousin Harold Gray on Little Orphan Annie; Leffingwell took over his brother Ed's strip Little Joe after Ed's death in 1936. In the late '60s, he briefly took over Little Orphan Annie after Gray's death.
Some sources attribute some early comic book features to this Robert, but those in Wheeler-Nicholson's New Comics have been re-attributed to R. G. Leffingwell (1909-1984)(no relation).
Inklings Sunday (Chicago Tribune-New York News Syndicate) 1973-XX-XX - 1973-XX-XX [Pencils and inks.];
Little Joe daily and Sunday (Chicago Tribune-New York News Syndicate) 1936-XX-XX - 1972-XX-XX [Writer, pencils, and inks. Known to have been assisted by ghost artists, probably including Harold Gray.];
Little Orphan Annie daily and Sunday (Chicago Tribune-New York News Syndicate) 194X-XX-XX ? - 1968-XX-XX ? [In 1951, Gray said Leffingwell did lettering and background work. Bails states Leffingwell did and assisted in pencil and ink work sometime in the 1960s to 1968.];
Maw Green Sunday (Chicago Tribune-New York News Syndicate) 19XX-XX-XX - 19XX-XX-XX [Assisted with pencil and ink work. Dates unknown, but probably around same time ghosting Little Orphan Annie.];
Ze Gen'ral Sunday (Chicago Tribune-New York News Syndicate) 1943-05-16 - 1943-05-23, 1943-09-05 - 196X-XX-XX [Writer, pencils, and inks.]
Leffingwell was publisher and owner of R. B. Leffingwell and Co. comic book company that lasted around 1944 to around 1945.
Notes: Not to be confused with R. G. Leffingwell, animator, 1909-1984, whose first name is also Robert. Bails and others have attributed some of R. G.'s work in New Comics to this Robert, but those strips are signed and should be attributed to R. G.