strings attached — keep this building for 20+ years

Library that got expansion grant 17 years ago cannot move to larger quarters and shut the [expanded] library down completely until 20 years have passed. This happened in my town too, just recently. The town owns the building and due to some law or another, needs to use the building for town purposes. Thi sis usually how historical societies get such great digs, I reckon. [thanks jeanette]