found: Ingoglia, Gina. Silver dollars for Uncle Scrooge, 1988(summary note: Huey, Dewey, and Louie plan a surprise party for Uncle Scrooge's birthday)
found: Disney learn to draw Uncle $crooge, Huey, Dewey, and Louie, 1991.
found: Bryant, Robyn. Disney's Donald Duck's clock book, 1997:title page (Huey, Dewey and Louie)
found: Huey, Dewey & Louie and the kitten, 1989.
found: Walt Disney's Donald Duck's happy day book, 1984:title page (featuring Huey, Dewey, and Louie)
found: Disney comics characters, via WWW, July 23, 2019(Huey, Dewey and Louie - Donald's nephews; Huey, Dewey, and Louie appeared for the first time in the Donald Duck newspaper Sunday page October 17, 1937, written by Ted Osborne and drawn by Al Taliaferro. At the time the Studio was working on a cartoon called "Donald's Nephews" (directed by Jack King) with the same theme, but due to the longer production time it didn't premiere until 1938. In the daily strip the boys first stayed with Donald only for a while, but later they returned for good)
found: Don Markstein's Toonopedia, via WWW, July 23, 2019(Huey, Dewey and Louie. Original Medium: Newspaper comics. Released by: Disney. First Appeared: 1937. Creators: Ted Osborne (writer) and Al Taliaferro (artist). They were introduced in the Donald Duck Sunday page for October 17, 1937, and it was this appearance that inspired the cartoon)
found: Huey, Dewey, and Louie, via Disney archives website, July 23, 2019(Huey, Dewey, and Louie; The nephews made their debut in the Donald Duck Sunday comic page on October 17, 1937, and first appeared on film in Donald's Nephews)
