The British Library has put every issue of Spare Rib in their digital journal archive, with full access, for free.
Few titles sum up an era and a movement like Spare Rib. When the first issue came out in July 1972, many women were starting to question their position and role in society. The magazine was an active part of the emerging women's liberation movement. It challenged the stereotyping and exploitation of women in what was the first national magazine of its kind. It supported collective, realistic solutions to the hurdles women faced and reached out to women from all backgrounds. Spare Rib became the debating chamber of feminism in the UK. It continued until January 1993 and the full archive of 239 magazines provides a valuable insight into women's lives and this period of feminist activity.
Ryan Richardson maintains several different and somewhat esoteric archives, including the entire five-issue run of the controversialish 70s teen groupie magazine Star, and a collection of covers from pulpy gay and lesbian novels from the 50s and 60s. [more inside]
The Virginia Quarterly Review — "A National Journal of Literature and Discussion" — just made public every article, essay, book review etc. published in its pages between 1975 and 2003. Search the archives here or check out this blog post for some greatest hits.
Cashiers du Cinemart. Film Threat's Dave Williams: "a thin, primitive hobby publication with an obvious ax to grind; making it far less interesting than you think it is, and compelling me to conclude it's impossible for you to ever get your shit together...killing one more tree for your pointless, directionless, self-aggrandizing 'zine with nothing to offer is a sad, selfish waste." Best known for the Anti-Tarantino saga, one man's quest to get a director to acknowledge his influences, Cashiers is a great '90s 'zine with archives online.