I'm sure there aren't too many rabid Sniffles fans out there considering how those cartoons pale in comparison to Chuck Jones' later shorts. Though I figured I'd post them as they're really solid drawings. Something I need to improve upon in my own crap.
Here's a classic Donald short directed by Jack King. I know very little about Disney animators so I can't really point any one particular person's work. Check out the awesome backgrounds when Donald leaves Daisy's yard.
I'm still on a bit on an Animaland kick, so here's another cartoon from the series. "The House-Cat" was released in 1949 and like the rest of the series features some fantastic animation. Bob Egby was kind enough to leave in a link to a great article that he wrote of his time as the messenger at G-B Animation. It's a great read if your interested in the background behind these cartoons.
Here's a few model sheets of the characters from "The Cuckoo", part of David Hand's Animaland series. This is definitely one of the better cartoons of the series. Thad posted it over a year ago on his blog, so go check it out if you've never seen it before. Sorry the not high resolution, they're taken from the model sheet gallery on the DVD.