'''Harmonium''' is a book of [[poetry]] by [[U.S.]] poet [[Wallace Stevens]]. His first book of poetry, it was published in 1923 (by Knopf) when he was in middle age (forty-four years old). Its first edition sold only a hundred copies before being remaindered. Most of its poems were published between 1914 and 1923 in other magazines.<ref>Bevis, H.: "...sixty-seven of the seventy-four poems of the 1923 ''Harmonium'' had first been published in small magazines between 1914 and 1923."</ref> So most are now in the public ___domain in America and similar jurisdictions, as the [[Sonny Bono Copyright Term Extension Act|Sonny Bono Copyright Term Extension Act]] affects only works first published after 1922.<ref>See Buttel for details about the publication dates of individual poems. See also the LibriVox site for the complete public ___domain poems of Wallace Stevens.[http://librivox.org/forum/viewtopic.php?t=4077] </ref>