Fernando Ventura asked last week which of the silent Disney cartoons are still considered as lost. As far as I know those are the ones that still fall in that category:

LAUGH-O-GRAMS

- Jack and the Beanstalk
- Goldie Locks and the Three Bears
- All of the Lafflets

SONG-O-REEL

- Martha

ALICE COMEDIES

- Alice Charms the Fish
- Alice's monkey Business
- Alice Cuts the Ice
- Alice the Lumber Jack
- Alice the Golf Bug
- Alice Foils the Pirates
- Alice at the Carnival
- Alice the Collegiate
- Alice in the Alps
- Alice's Auto Race
- Alice's Knaughty Knight
- Alice's Three Bad Eggs
- Alice's Picnic
- Alice's Channel Swim
- Alice in the Klondike
- Alice's Medicine Show
- Alice the Beach Nut

OSWALD

- Poor Papa
- The Bauher's Daughter
- Harem Scarem
- Rickety Gin
- Neck ' N ' Neck
- Empty Socks
- The Ole' Swimmin' Ole
- Africa Before Dark
- Sage Brush Sadie
- Ride 'Em Ployboy!
- Hungry Hoboes
- Sky Scrappers
- Sleigh Bells
- Hot Dog