Hannes Bok (1914-1964) was an American artist and illustrator. He also went by the name Wayne Woodard. Much of his work was Fantasy Art and Science Fiction themed.
Resource Cited:
Artcyclopedia
http://www.artcyclopedia.com/artists/bok_hannes.html
Lithograph titled "The White Powers". The piece depicts a large man reaching towards the sky with smaller figures around him. There is a note at the bottom of the piece which states, "For Wilma Hall Fowler and Susie with love".
Date: 1945
A lithograph titled "Summer Night" depicting a nude woman standing by a tree in the moonlight. "For Wilma and Susie" is written below image. Artist signaure and date in lower right corner.
Date: 1946