See commons.wikimedia.org/wiki/Category:Long_hair

commons.wikimedia.org/wiki/Category:Female_long_hair

commons.wikimedia.org/wiki/Category:Women_with_long_hair

commons.wikimedia.org/wiki/Category:Female_long_hair_in_art

commons.wikimedia.org/wiki/Category:Nude_women_with_long_hair

If you upload more, please remember that it must be public domain (like 70 years old or something) or you must be the owner and it must be pushided under open content license.