Salvador Dali, "Lincoln in Dalivision" (1976)

from Wikipedia

Dalí's paintings Gala Contemplating the Mediterranean Sea which at a distance of 20 meters is transformed into the portrait of Abraham Lincoln (Homage to Rothko), and the original Lincoln in Dalivision lithographs produced from these paintings were some of the first examples of the photomosaic artistic approach by a recognized artist. "The Recognition of Faces," by Leon Harmon (Scientific American, November 1973) was the first published work on photomosaic concepts. Harmon was a Bell Labs researcher who had been developing this concept, and the first image in this article was the well recognized portrait of Abraham Lincoln from the U.S. five dollar bill made from a collection of solid gray mosaics.[9] Dalí began his first painting that led to Lincoln in Dalivision in 1974 and finished the version that would be used for Lincoln in Dalivision in 1976. Harmon's Lincoln mosaic was the basis for all of Dalí's Lincoln photomosaics, which is evident by comparing the solid gray mosaics from Harmon's paper and the final works of art by Dalí.