Here's some more stuff. Sorry if there is repeated information, but there's a lot of pages. And you may want to save some of these pics so you can zoom in. These are just cell phone pics, after all...
Included: copyright registrations for the Muppet characters and, towards the bottom, the contract (I assume) of Henson's mid-'90s TV deal with ABC, the deal that led to "Muppets Tonight" and "Aliens in the Family."