Barry Mackintosh has written:
'The United States Park Police' -- subject(s): History, United
States Park Police
'Interpretation in the National Park Service' -- subject(s):
Historic sites, History, Interpretive programs, National parks and
reserves, United States, United States. National Park Service
'Booker T. Washington'
'The National Historic Preservation Act and the National Park
Service' -- subject(s): Conservation and restoration, Historic
preservation, Historic sites, Law and legislation, United States,
United States. National Park Service
'The Historic Sites Survey and National Historic Landmarks
Program' -- subject(s): Conservation and restoration, Historic
sites, History, Local History, National Historic Landmarks Program
(U.S.)