Tolkien vs. Jackson: Differences Between Story and Screenplay
https://lotr.fandom.com/wiki/Tolkien_vs._Jackson:_Differences_Between_Story_and_Screenplay
An extensive Wiki denoting the differences between Tolkien's trilogy and the film adaptations created in the early-2000s.
The Hero is a Hobbit
New York Times review of the original 1954 publication.
Hit the Road, Middle-Earth Gang
https://www.nytimes.com/2001/12/19/movies/film-review-hit-the-road-middle-earth-gang.html
New York Times review of the 2001 adaptation of Fellowship.