From publisher blurb:
Medieval scribes liked to fill the margins of their illuminated manuscripts with pictures of strange creatures doing strange things.
The Medieval Margin-agerie Zine (Vol 1) presents fanciful and fantastical content based upon nine of these weird creatures. Each comes with a measure of doubtful background, questionable research material, and stats suitable for most OSR games.
These creatures and artefacts are designed to be compatible with OSR-style games and can be easily tweaked to suit other fantasy or horror roleplaying games.
The Medieval imagination, not unlike the modern, tends towards an obsession with things below the belt. As a result, some of the content of the Margin-agerie is somewhat sexual or scatological. It's more Carry On in nature than anything, but forewarned is forearmed.