© Hanna-Barbera. Click the thumbnail for a full image.
... from the MegaCollector, the classic H-B characters, for the cover of a coloring book; artist unknown.
Clockwise from upper left: Quick Draw McGraw, Baba Looey, Yogi Bear, Boo Boo, Mr. Jinks, Dixie and Pixie. Center: Huckleberry Hound.
(A simple rule of thumb: Pixie wears the bowtie, Dixie wears the vest.)
Below, from 1958, the very first Pixie and Dixie cartoon, "Cousin Tex".