Deletion of Sonoma County Historical Society list of landmarks

Comment: An officer of the society (MikeVdP – COI-declared) posted a link to a list as a reference. The list has over 500 items. Moreover, the list referenced Wikipedia, indicating it was created to support the article and not an actual effort to designate historical landmarks. The source used :Find a Grave as a reference to prepare the list. But the Find a Grave website includes "cemeteries" with unknown locations, no documentation, and no historic value. (For example, cemetery is a church memorial with no notable or even historical persons.) The List fails both  and . Pointing to :List of Los Angeles Historic-Cultural Monuments in Downtown Los Angeles is a  and  argument.  Focus should be on improving the existing list articles which will have value to the reader
Stance: delete
Cited policy: Wikipedia:Notability (WP:NOTEWORTHY||WP:NOTABLE||WP:OTHERSTUFF||WP:WHATABOUT)

Comment: There are sufficient sources in the article already to pass 
Stance: keep
Cited policy: Wikipedia:Notability (WP:GNG)

Comment: as this is an example of . We do have list articles, but these are usually well known lists. We do not feature lists curated by local societies/media as these lists are usually not notable. The individual items in the list may well be notable and individual articles can be created about them. Alternatively it might be possible to add them to suitable existing articles. If possible, I would suggest to '''Userfy''' the article, so that the content remains accessible
Stance: delete
Cited policy: Wikipedia:No original research (WP:SYNTH)