here are a couple of sites I have found thru sifting through the web that are dedicated to the pursuit, archival, and documentation of underground, experimental, and avant-garde media.
https://missioncomicsandart.com/resources
http://comixjoint.com
https://www.cgccomics.com/boards/topic/433429-undergroundnewave-comix-post-your-obscure-undocumented-or-rarely-discussed/#comments
http://www.opticalsloth.com
https://www.poopsheetfoundation.com
https://faroutcompany.com
http://www.sirrealcomix.com
http://artistsperiodicals.blogspot.com
https://thecomixcompany.ecrater.com
http://www.ep.tc/realist/
https://www.researchpubs.com
https://www.ubu.com
http://www.dominobooks.org
https://justindiecomics.com
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