Deletion of Kay Nelson

Comment: There's no information here beyond what can be found in the Internet Movie Database, but Nelson was once nominated for an Oscar http://us.imdb.com/name/nm0625513/awards which would place her above the run of the mill for costume designers, and also did costumes for some other prominent films (Miracle on 34th Street, Gentleman's Agreement). She may qualify under  among "other professionals whose work is widely recognized (for better or worse) and who are likely to become a part of the enduring historical record of that field
Stance: comment
Cited policy: Wikipedia:Notability (WP:BIO)

Comment: per the Oscar nomination and the work on an extremely notable film (Miracle on 34th St.).  Costume designers are rarely notable, but I think this one might just barely squeak by.  A reference in a book (even if she wasn't one of the subjects) adds some |verifiability
Stance: keep
Cited policy: Wikipedia:Verifiability (WP:V)