Then there are of course the far fewer "Hey this is WDW Property, No Trespassing!" signs. One on Center Dr and the one below on Vista Blvd just east of Ft. Wilderness when heading west. I have only found two of these by the way.
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This sign says "Private Property WDW Guest, Cast, and Business Invitees only." I find this one on Vista kinda weird in that you are already on WDW Property in all directions. Then there is this sign. Of course it is right up against the Golden Oaks/Four Points complex at the intersection of Bonnet Creek / Dream Tree Dr. and Vista Blvd.
(Don't even get me started on the selling off of the land for Golden Oak. Though I think it is still controlled by Disney somehow.)