Adamson grew up in Neutral Bay and spent much of his teenage years in Gosford Boys Home for juvenile offenders. He discovered poetry while educating himself in Gaol in his 20s. His first book, Canticles on the Skin, was published in 1970. He acknowledges the influence of, among others, Rimbaud, Mallarmé, Robert Duncan, and Hart Crane upon his writing.
In the 1970s and 1980s, he edited New Poetry Magazine and established Paper Bark Press in 1988 with his partner Juno Gemes.
Canticles on the Skin. (Sydney: Illumination Press, 1970)
Cross The Border. (Sydney: Hale & Iremonger, 1977) ISBN 0-86806-050-X
Where I Come From. (Sydney: Big Smoke, 1979) ISBN 0-908201-00-1
The Clean Dark. (Sydney: Paper Bark, 1989) ISBN 0-9587801-2-9