Preuss photographic work range from figure study to still life.
The hooded figure studies the image for a time, then shakes his head, barely moving the dark hood.
His Haitian landscapes and figure studies are considered to be some of his best works.
Classes in the classic arts such as photography, drawing, painting, and figure study are offered.
Several of his works deal with still life and human figure studies.
"I think kids' art is like figure studies, pretty much all the same," he said.
The majority of his archive focuses on portraits, still life, and figure studies.
However other Christian institutions see no conflict but rather maintain the need for nude figure studies as part of a complete classical art education.
The pictures for which he is best known today are probably the portraits and figure studies he began to do by the mid-50's.
In her pair of figure studies, the body seems almost to dissolve beneath the water's surface.