For what's worth, I believe these come from Journey to Tomorrow- Destination: Careers. It was a short educational film released in 1984 from the Journey to Tomorrow series.
Its interesting that they chose Sebastian. For a little context, when the restaurant was known as the Captain's Tavern, Sebastian appeared on the kids menu that doubled as a paper hat. Not to mention for a while the Little Mermaid appeared thought the resort on the mugs, in Centertown, the gift...
Here is a photo update from last weekend
Here is the extension that will house the new check-in area
Construction on the new table service restaurant is progressing
Panorama of the work on the new skyliner/Rivera area
Another View
Forgive me if this is being discussed somewhere else, I looked and couldn't find it. The Walt Disney World Railroad's new sign was unveiled today and it appears the "The" has been removed from in front of "Magic Kingdom". The elevation and population statistics are also gone.