Dating is an estimate from www.ausreprints.com.
from World's Finest Comics (DC, 1941 series) #28 (May-June 1947)Robin on the original cover has been redrawn as Superboy for this reprint, with a pound sign replacing the dollar sign on the original.
"Action! Thrills! Excitement! Stories that teem with movement, menace and mystery! -And, in the leading role in every story in this top-notch magazine is the screen's real two-fisted he-man Congo Bill! - battling his way through perilous paths on the highway to adventure! Don't miss it! The Adventures of Congo Bill at all newsagents." The featured cover in this advertisement, The Adventures of Congo Bill (K. G. Murray, 1950 series) #1, is by Australian artist Hart Amos.
from World's Finest Comics (DC, 1941 series) #45 (April-May 1950)Other printings of this story include: Superman Super Library (K. G. Murray, 1964 series) #23.
from World's Finest Comics (DC, 1941 series) #48 (October-November 1950)This story is printed on side, two up. The original feature is 12 pages. Other printings of this story include: Colossal Comic (K. G. Murray, 1958 series) #47
from Superboy (DC, 1949 series) #13 (March-April 1951)This story is printed on side, two up. The original feature is 12 pages.
This feature is also printed in: Hundred Comic Monthly, The (K. G. Murray, 1956 series) #23.