Here's a resource: http://ubuweb.com/
This as a result, though not absolutely direct, of going to hear Marjorie Perloff yesterday afternoon on campus. Her remit was to talk about conceptual poetry at the Hebrew Conference: Written Word, Spoken Word ; she began with O'Hara's Lunch Poems and ended with Kenneth Goldsmith's Seven American Deaths and Disasters. Goldsmith is the founder of Ubuweb, a resource for the avant-garde and outsider poetry. Ubuweb would be great to have along on a 12-hour transatlantic flight. As you will see if you check it out.
The image is the cover of Seven American Deaths and Disasters, published by Powerhouse Books, 2013.