These links are courtesy of Chris Nicholson, presented as part of his program on Dec 4th 2017.

www.PhotographingNationalParks.com  (at this site you can sign up for his newsletter)

www.NationalParksAtNight.com

www.facebook.com/NationalParksAtNight

 

Other sites to check:

www.NationalParksTraveler.com

www.Luminous-Landscape.com

www.PhotographAmerica.com  (newsletter by subscription)

www.chimani.com  (GPS enabled maps for the smartphone)

www.photoephemeris.com (The Photographer's Ephemeris® (TPE) is a tool to help you plan outdoor photography in natural light, especially landscape and urban scenes. It is a map-centric sun and moon calculator: see how the light will fall on the land, day or night, for any location on earth.)

 

National Geographic National Park Guides, available at https://shop.nationalgeographic.com/

And also available on Amazon.