Richard J. Evans

Fair use for the birth of venus, the starry night, the scream and the crucifixion.

The images linked here are claimed to be used under fair use as:

They are historically significant paintings, as per the information in the article.
The images are only being used for informational purposes.
Their inclusion in the article adds significantly to the article because it shows the subjects of this article and how the images depicted are familiar to the general public.
The images are readily available on the Internet.