When pieces of national parks go on sale, U.S. can't pay

Interesting article about public land in U.S. National Parks - that mentions the
Trust for Public Land and the National Park on St. John:

"Parks get some help from charitable land trusts that can buy land and donate it or give "bridge funding" to willing sellers until the park is in a position to pay.

"We are a conservation emergency room, and with the decline of funding in recent years we've had to do more triage," says Mr. Front of the Trust for Public Land.

The group stalled a major development at the Virgin Islands National Park by putting up $30 million. The Trust also helped the park secure 56 acres on Cape Cod, Mass., including the only public camping area."