The whole Earth in colour.
A much better picture of the Earth in colour was taken by the ATS-III weather satellite from 22,300 miles up in November 1967. The ATS satellites had a clever camera that was able to take TV-quality pictures line by line as it spun. The weathermen were more excited by the evidence of cloud formations but this was the best picture of the whole Earth until the Blue Marble. It was used on the cover of the first Whole Earth Catalogue, which also advertised a psychedelic ATS-III film of the Earth.