Deletion of Joshua Greenberg

Comment: Thanks DGG  (see below) for doing some extra digging. Actually, I have just checked WorldCat, through a subscription version, and the book is in 501 libraries worldwide. With that many holdings, I think this is a weak keep based on meeting  criterion #1 (significant impact in scholarly discipline, broadly construed). Not a clear keep because of the low citation impact of the book (3 citations on GS), but certainly a weak keep
Stance: keep
Cited policy: Wikipedia:Notability (WP:PROF)

Comment: His book has only three citations in Google scholar and a handful more in Google books. His position at NYPL does not confer notability and he fails 
Stance: delete
Cited policy: Wikipedia:Notability (WP:PROF)