Many of his Beat, Black Mountain and San Francisco contemporaries (Ed Dorn, Charles Olson, Gary Snyder, Joanne Kyger, Allen Ginsberg) have appeared in these publications.
Koller remained in the Bay Area into the 1970s, and at times joined the Diggers in putting out their Haight-Ashbury free broadsides.
Afterward, he embarked on the first of many European tours, accompanied by the late Franco Beltrametti and Harry Hoogstraten.
Since the 1989 Chicago performance of The Bone Show with composer Peter Garland, Koller has regularly appeared and been recorded in the US and Europe with American musician/songwriter Governor Clay.
He was also active as an artist and photographer (exhibitions in Portland, Maine; Santa Fe, New Mexico; New York City and Rome, Italy).