To authorize the Board of Regents of the Smithsonian Institution to acquire land for watershed protection at the Smithsonian Environmental Research Center, and for other purposes.

[AI summary unavailable — showing source text] Authorizes the Board of Regents of the Smithsonian Institution to acquire land for watershed protection at the Smithsonian Environmental Research Center at Edgewater, Maryland. Authorizes appropriations to the Board to carry out such purposes for FY 1992 and succeeding fiscal years. Requires that such sums be matched equally with funds from non-Federal sources. Amends Federal law which authorizes the Board to plan, design, construct, and equip specified space in the National Museum of Natural History to provide that the appropriation authorized for such purpose is to remain available until expended.…