Donald and the boys visit Hondorica, the locale of a previous adventure in Barks' earlier "Secret of Hondorica" in (Dell, 1952 Series) #46 (March-April 1956). https://www.comics.org/issue/12731/#106997
Serenading gags reworked from an originally unpublished story in which Donald aggressively serenades Neighbor Jones with Christmas Carols. The Neighbor Jones story has since been printed in various collections.
Granny Wolf would appear to be Zeke's mother, and Li'l Wolf's grandmother. Li'l Wolf tells the Pigs: "I inherited my goodness from HER! She's not like Pop!"
Part 3 of 3.
The Rover Rogue Boys, who only appeared in this one story, would seem to be a "substitute for The Beagle Boys", as discussed in the text article "The Winds (and Fog) of Change" by Joe Torcivia, appearing in Disney Masters (Fantagraphics, 2018 Series) #21 - Walt Disney Mickey Mouse: The Monster of Sawtooth Mountain (October 2022). https://www.comics.org/issue/2443125/#3600025
Like The Beagle Boys, The Rover Rogue Boys are a trio of burglar-masked, dog-face crooks, only of different and individualized physical dimensions.
In Episode I, Paul Murry draws Gyro Gearloose with hair (or a hairpiece) atop his head - and down the back and sides of his head. In Episodes II and III, the inventor is drawn more conventionally with just a "birds-nest" of hair or toupee between his dome and his hat.