He began work at The Advertiser in 1967 as the eventual replacement (Robert Hannaford intervened) for Pat Oliphant, who left for a career with the Denver Post in 1964.
Fellow cartoonist John Stoneham observed that Atchison "always worked completely freehand, never following pencil lines, but drawing ink straight on to paper, an art form which is long forgotten".
Many cartoonists have a trademark which may be found in their works; Atchison's, born in 1974, was a scruffy little dog which occasionally behaved disgracefully.
[2] Atchison lived with cancer from 1994, but despite pain and irksome operations never lost his affable good humour.
An original cartoon (featuring the "dog of no name") may be seen in an alleyway off the main street in the Adelaide Hills town of Aldgate.