So what it seems you are mentioning here is that the only American film from an American famous short story, that is required reading in most high schools, with famous American actors, that can be identified on numerous internet sources, is not notable? Two famous studios have released it at this point as well. 

Wikipedia Guidelines: The common theme in the notability guidelines is that there must be verifiable, objective evidence that the subject has received significant attention from independent sources to support a claim of notability. The absence of citations in an article (as distinct from the non-existence of sources) does not indicate that the subject is not notable.

Wikipedia Guideliens: No subject is automatically or inherently notable merely because it exists: The evidence must show the topic has gained significant independent coverage or recognition, and that this was not a mere short-term interest, nor a result of promotional activity or indiscriminate publicity, nor is the topic unsuitable for any other reason. Sources of evidence include recognized peer reviewed publications, credible and authoritative books, reputable media sources, and other reliable sources generally.

The Harbrace Guide to Writing books (both of them, published and distributed to colleges throughout the U.S. referencing the film) falls under credible and authoritative books.

Since I am a long-term donor of Wikipedia, it seems that this is a direct violation of what Wikipedia professes their site is. 'The Free Encyclopedia'. An Encyclopedia is a reference for documented, written sources. Together, all the sources add up to an article, which deems notability as referenced above.  I am not trying to be argumentative, but factual in what Wikipedia claims they are as a source, and what they have told me they are in terms of my donations as a supporter over the years. 

With the extra reference you have acknowledge above, the third reference of the Harbrace Guide to Writing (100,000 print copies) is yet another verifiable source. Again, this is not a confrontation. thank you.