Guide to Cape Cod National Seashore, Massachusetts is available here: https://bookstore.gpo.gov/products/sku/024-005-01126-9
Boston and the American Revolution: Boston National Historical Park, Massachusetts is available here: https://bookstore.gpo.gov/products/sku/024-005-01188-9
Salem: Maritime Salem in the Age of Sail is available here: https://bookstore.gpo.gov/products/sku/024-005-01268-1
Charlestown Navy Yard: Boston National Historical Park can be found here: https://bookstore.gpo.gov/products/sku/024-005-01278-8
Edward M. Kennedy: Memorial Addresses and Other Tributes, 1932-2009 -Print Paperback Format is availalbe here: https://bookstore.gpo.gov/products/sku/052-071-01534-5
Other products produced by the U.S. National Park Service(NPS) can be found here: https://bookstore.gpo.gov/agency/222
About the Author
General Interest, Travel, Parks and Recreation.