D is for Drawn Disney - the nine old men

I must apologise.

I like Disney cartoons, 

be they short or feature length. 

But I prefer the ones

that don't contain computer generated imagery.

King Louis from The Jungle Book - Source

Maybe it is the drawn lines
combined with the expanses of plain colour.
The smooth and realistic movement
that reflected "the illusion of life".

Or is it the combined work of a collection
of the old nine men?
The name given to the core animators
from the 1930's to the mid 1970s.

The Nine Old Men - Source

Alphabetically, and not working from the image above,
I am not doing all the work for you. they are Les Clark,
Marc Davis, Ollie Johnston, Milt Kahl, Ward Kimball, Eric Larson,
John Lounsbery, Wolfgang Reitherman and Frank Thomas.

Les Clark, died in September 1979, was known for animating
Mickey Mouse as well some of the first feature-length animated films.

Source

Marc Davis, died in January 2000, cut his teeth on Snow White
and worked on the villains in Sleeping Beauty and 101 Dalmatians.
His work was also used in the Imagineering Department
with the Pirates of the Caribbean and the Haunted Mansion.

Source

Ollie Johnston, died in April 2008, was one of the authors
of The Illusion of Life, animated Smee in Peter Pan,
Cinderella's stepsisters to name but two (or three).

Source

Milt Kahl, died in April 1987, worked on Shere Khan in The Jungle Book
and Madame Medusa in The Rescuers to name but two..

Source

Ward Kimball, died in July 2002, was a joker
and used his life experiences to animate Jiminy Cricket and the Cheshire Cat
as well as many others. 

Source

Eric Larson, died in October 1988, animated the Beatle'esque Vultures
from The Jungle Book but also helped to teach the next
generation of Disney Artists.

Source

John Lounsbery, died in February 1976, was known for
his squashed and stretched animation and created the
animation of the elephants in The Jungle Book.

Source

Wolfgang 'Woolie' Reitherman, died in May 1985,
animated Monstro in Pinocchio and the Crocodile in Peter Pan.

Source

Frank Thomas, died in September 2004, was the co-author with
Ollie Johnston and also collated a collection of sight gags
entitled "Too Funny For Words".

Source

The Nine Old Men produced an elastic set
of rules for animation, these included:
1) Squash and stretch
2) Anti-ci-pation
3) Staging
4) Straight Ahead Action and Pose to Pose
5) Follow Through and Overlapping Action
6) Slow In and Slow Out
7) Arcs
8) Secondary Action
9) ...Timing
10) Exageration
11) Solid Drawing
12) Appeal

Here is the first video of
the 12 Principles of Animation.

Source

A good summary of this page can be found here.