| 2. Adventure Crew
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| Source provides pictures, videos, and information regarding many of America's parks, monuments and wilderness areas. |
| http://www.adventure-crew.com |
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| 3. American Park Network
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| Publisher of visitor guide magazines offers information on trip planning, reservations and family activities. |
| http://www.americanparknetwork.com |
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| 5. Mapping the National Parks
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| Collection documenting the history, cultural aspects and geological formations of areas that eventually became National Parks. |
| http://memory.loc.gov/ammem/gmdhtml/nphtml/nphome.html |
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| 6. National Park Directory
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| Listing of locations, seasons open, area in acres, major attractions and activities. |
| http://www.cftech.com/BrainBank/OTHERREFERENCE/THEOUTDOORS/NatlParks.html |
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| 7. National Park Foundation
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| Purchase the National Parks Pass, plan a trip, read community opinions or learn about volunteer opportunities. |
| http://www.nationalparks.org |
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| 8. National Park Reservations
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| Offers reservations and information about parks throughout the U.S. and Canada, including lodging and activities. |
| http://www.nationalparkreservations.com |
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| 9. National Park Trust
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| Land conservancy dedicated exclusively to America's Parklands, wildlife, scenic wonders and historic monuments. |
| http://www.parktrust.org |
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