- Script
- Carl Barks
- Pencils
- Carl Barks
- Inks
- Carl Barks
- Colors
- Western Publishing Production Shop
- Letters
- Carl Barks
- Genre
- anthropomorphic-funny animals; humor
- Characters
- Donald Duck; Huey; Dewey; Louie; Sir Gnatbugg-Mothley; Professor McFiendy
- Synopsis
- Donald, an aggressive butterfly collector, is hired by Sir Gnattbugg-Mothley to go to Africa and bring back an Almostus Extinctus, rarest of butterflies. In Africa, the ducks are sabotaged by Professor Angus McFiendly, who is also after the Almostus Extinctus, and Donald is forced to give him the butterfly when the nephews are captured by cannibals hired by McFiendly.
- Reprints
- in Dono di Topolino ai suoi amici (Mondadori, 1950 series) ([1950])
- in Le Journal de Mickey (Hachette, 1952 series) #331 (28 septembre 1958)
- in The Complete Carl Barks (Luigi Olmeda, 1981 series) #7 ([1984])
- in The Carl Barks Library (Another Rainbow, 1983 series) #6 (May 1990)
- in Walt Disney's Donald Duck Adventures (Disney, 1990 series) #29 (October 1992) [reinked]
- in Donald Duck & Co (Hjemmet / Egmont, 1948 series) #23/1994 (7. juni 1994) [part 1], #24/1994 (14. juni 1994) [part 2]
which are reprinted- in Donald Duck & Co (Hjemmet / Egmont, 1948 series) #25/1994 (21. juni 1994) [part 3]
- in Carl Barks Library of Walt Disney's Donald Duck Adventures in Color (Gladstone, 1994 series) #14 (February 1995) [reinked]
- in O Melhor da Disney: As Obras Completas de Carl Barks (Editora Abril, 2004 series) #37 (2008)
- in The Complete Carl Barks Disney Library (Fantagraphics, 2011 series) #[6] - Walt Disney's Donald Duck: The Old Castle's Secret (2013)
Art submitted on September 25, 1947. Synopsis by Michael Barrier from "Carl Barks and the Art of the Comic Book" (M. Lilien, 1982).