About 690 acres remain, and efforts are under way to have that too remain free of development.
Just 15 acres remain in the family now, and houses are going up all around them.
The group said 1.9 billion acres of tropical forest remained.
Seven acres remain in the southeast corner for future growth.
Some 5,000 acres will remain in a nature preserve.
But the house and 8,000 acres have remained in the family through four generations.
But 800 acres of trust land remain in the bill as conservation areas, the aides said.
Several acres, however, remained in the family, including the Boeing's own and two smaller houses.
By the turn of the century, 3,000 acres remained.
Only 62,040 acres remain, the rest being an experimental station.