"ACID FREE" is of course a reference to acid-free paper, paper with neutral pH balance when infused in water. This type of paper is overwhelmingly preferred by artists and archivists, as its use contributes strongly to the preservation of documents over time.
Hat and Beard Press is proud to be on the programming committee for The Los Angeles Acid Free Art Book Market. We will also be present with a table to hock our wares and make idle chat.
There is also the possibility of free acid, but don't tell anyone we told you that. We're easygoing in California but nobody anywhere likes a narc.