• Sue Walsh's work in relation to realistic fiction and literature for children might be of interest. Of note (both are available through the library):

Walsh, Sue. ‘Child/Animal: It’s the “Real” Thing’. The Yearbook of English Studies 32 (2002): 151. CrossRef. Web.
---. ‘Nature Faking and the Problem of the “Real”’. ISLE: Interdisciplinary Studies in Literature & Environment 22.1 (2015): 132. Print.

• A brief clip of William Cronon talking about America's National Parks on PBS.
• Ken Burns, for PBS, also did a film on The National Parks. There's a lot of imformation on this site, so just have a good wander through it, looking at what interests you.