Pub. L. 92-272, tit. III, sec. 304

Sec. 304. For the acquisition of lands and interests in lands which are added to the areas referred to in section 301, there are authorized to be appropriated such sums as may be necessary, but not more than the following amounts: (1) Adams National Historic Site, $122,000; (2) George Washington Birthplace National Monument. $57,000; (3) Glacier National Park. $6,000; (4) Isle Royale National Park, $31,500; (5) Johnstown Flood National Memorial, $10,000; and (6) Muir Woods National Monument, $950,000.