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American Poetry Now: Pitt Poetry Series Anthology
The American Voice Anthology of Poetry
Inclined to Speak: An Anthology of Contemporary Arab American Poetry
Looking Out, Looking In: Anthology of Latino Poetry
Modernist Women Poets: An Anthology
The New Anthology of American Poetry: Postmodernisms 1950-Present
Women of Resistance: Poems for a New Feminism
Word Warriors: 35 Women Leaders in the Spoken Word Revolution
You'll find some poetry collections and anthologies that have been digitized in the Internet Archive. You can borrow digitized copies of books for up to 14 days with a free account. Access is limited to one user at a time per book, so be sure to return the book as soon as you're done to make it available for others. When doing a search, change "Metadata" to "Text Contents" to search for keywords in the full content of all of the Internet Archive's digitized books.
Here are just a few poetry anthologies available in the Internet Archive: