Between August 30, 1936 and December 5, 1937, Taliaferro and Osborne depicted Donald in gag-a-week comic strips for the "Silly Symphony" series. The strips were in pantomime style. On October 17, 1937, Taliaferro and Osborne introduced three new characters: Huey, Dewey, and Louie. The three were Donald's nephews, sons of his sister. The trio were counterparts to Morty and Ferdie Fieldmouse, the nephews of Mickey Mouse. Taliaferro came up with the idea of a solo comic strip for Donald Duck, but had trouble convincing his bosses to support his idea. He initially pitched the idea to Roy O. Disney, who rejected it. Taliaferro then produced three weeks-worth of episodes for a Donald Duck comic strip, brought them to Roy Disney, and asked him to offer the strip to King Features Syndicate for publication. King Features had syndicated all Disney comic strips up to this point. Roy Disney was not particularly interested in the project, but his brother Walt Disney could see potential in the project. Taliaferro's original sample stories were rejected due to having "weak gags". Taliaferro co-operated with writer Merrill De Maris to create new sample stories, but these were also rejected. Taliaferro then co-operated with writer Homer Brightman, and this time the sample stories were approved. Taliaferro's idea was greenlighted and the new Donald Duck comic strip was about to begin. On February 2, 1938, the Donald Duck comic strip started appearing in daily newspapers. A Sunday version was added on December 10, 1939. Taliaferro's was the strip's main penciller, while Homer Brightman was its writer and came up with the gags. But Brightman was mostly a screenwriter, and soon quit the comic strip and returned to writing plots for animated short films. Brightman was replaced by Bob Karp, who would serve as Taliaferro's main creative partner for the rest of his career. The inkers for the comic strip included Karl Karpé, Dick Moores, George Waiss, and Bill Wright. Taliaferro also relied on a number of assistant artists, including Ellis Eringer, Frank Grundeen, Al Hubbard, and Kay Wright. While the "Mickey Mouse" comic strip was an adventure series, the "Donald Duck" comic strip continued to be a daily comedy series. Each episode featured Donald dealing with problems and humorous situations.