Author of around 40 books of poetry and criticism published variously in Canada, England, and the United States, McCaffery was a founding member of the sound poetry ensemble Four Horsemen (with bpNichol of TRG--The Toronto Research Group), and a founding theorist of Language Poetry. He has published three previous titles with BookThug: a revised second edition of Panopticon, The Basho Variations, and Every Way Oakly (homolinguistic translations of Gertrude Stein's Tender Buttons), as well as editing the first Canadian edition of Stein's book of that name. He is the two-time recipient of the Gertrude Stein Award for Innovative Writing, and was shortlisted twice for the Governor General's Award in Poetry. He lives and teaches in Buffalo, NY, where he is the David Gray Professor of Poetry and Letters at the State University at Buffalo.