info thx to Derek Beaulieu:

Download PDFs of 3 exceptional early anthologies of concrete poetry: Text–Sound Texts (1980, https://monoskop.org/log/?p=18969), An Anthology of Concrete Poetry (1967/2013, https://monoskop.org/log/?p=15439), Astronauts of Inner Space (1966, https://monoskop.org/log/?p=4404) all courtesy Monoskop Log.