I found these images on a site by a London dealer in Japanese Prints, Richard Kruml-Ukiyo-e.
They are by the shin hanga artist Hashiguchi Goyo. He was celebrated as a woodblock printmaker of bijin-ga, or beautiful women.
He prepared to make his prints by making pencil studies, two of which are shown here.
A few more links:
Amazon.com Links: Beauty In A Black Kimono by Hashiguchi Goyo, The Female Image: 20th Century Prints of Japanese Beauties
Click here to see items by Hashiguchi Goyo for sale on Ebay.