I haven’t encountered many double exposure photographs over time. Lee Friedlander, probably best known for his self portraits, would sometimes employ the style, using only traditional photographic techniques.
These images, created by a Finnish, self taught photographer, Christoffer Relander, are visually stunning. He is a graphic artist by trade, and I am guessing that his knowledge of graphic arts tools is a part in the creation of these images. He explains the process:
All images are done “in-camera” while shooting with a Nikon D700. Afterwards, the files were contrast adjusted, black & white toned and more or less dodged and burned.
The hand portraits are all triple exposed.
His use of a computer to finish the images is not a statement on the quality of his photography. He took up photography in 2009, and his body of work, largely made up of traditional photography, is impressive.
I’d like to attribute these photos to the source where I found them, but I lost the link. Sorry.