Well the official status was that 11 still remained (although some only still exist in the collections of private owners, so I believe).
Trolley Troubles: Yes
Oh Teacher: Yes
The Mechanical Cow: Yes
Great Guns: Yes
All Wet: Yes
The Ocean Hop: Yes
The Banker’s Daughter: Lost
Empty Socks: Lost
Rickety Gin: Lost
Harem Scarem: Lost
Neck ‘n’ Neck: Lost
The Ol’ Swimmin’ ‘Ole: Lost
Africa Before Dark: Lost
Rival Romeos: Yes
Bright Lights: Yes
Sagebrush Sadie: Lost
Ride ‘Em Plowboy!: Lost
Ozzie Of The Mounted: Lost
Hungry Hoboes: Lost
Oh, What A Knight: Yes
Sky Scrappers: Yes
The Fox Chase: Yes
Tall Timber: Lost
Sleigh Bells: Lost
Poor Papa: Lost
Hot Dog: Lost
It doesn't seem much to fill 2 discs, although hopefully they'll be a really good in depth doc, maybe about an hour. Although who knows, maybe some of the lost ones may have turned up and they're keeping it quiet.