The made for TV Disney movie Beyond Witch Mountain (1982) starred Eddie Albert and his American Clipper. I watched it last night and identified the following details about that clipper:
21 ft
1975 at earliest (had the louvre style windows)
Dodge chassis
Rear kitchen floorplan
Wood paneling - no burlap styling
no generator
Ladder
No hitch
No American Clipper stickers on it
There is a round sticker (orange-ish in color) on the back window behind the ladder, but I couldn't tell what the sticker was for, etc.
The door locks were tall & skinny (not the type with the wide button at the top end)
Dark brown dash
Golden brown seats
Awning
Does this sound like your clipper? Maybe it's famous!