1937 was a key year for the animation industry. So many important developments took place, but none moreso than the Disney studio.
Gearing up for Snow White's release, Disney put out some promotional films for the public and for their new distributor RKO Radio Pictures. The former would technically be the only feature length film that their old distributor, United Artists would release. This was simply a compilation of every Oscar winning cartoon up to that time, concluding with COUNTRY COUSIN.
There is no real new footage except for bridging material which shows an Oscar statue with narration.
This compilation was reissued in 1966 and added the 1937, 1938, 1939, and 1941 Oscar winners, but without new narration. Curiously, the 1942 snd 1954 winners were not shown, possibly because the former was wartime related or maybe to keep the running time concise.
A true curiosity which only has passing mention in film and Disney encyclopedias. It only had home video releases overseas. The fact that it was made available at all is strange. Because of lack of exposure, it's difficult to know exactly how it was presented in 1937.
Not really a must have, but an interesting footnote in Disney's filmography.