"Erotic scenes in medieval illuminated manuscripts also appeared, but were seen only by those who could afford the extremely expensive hand made books. Most of these drawings occur in the margins of books of hours. Many medieval scholars think that the pictures satisfied the medieval cravings for both erotic pictures and religion in one book, especially since it was often the only book someone owned. Other scholars think the drawings in the margins were a kind of moral caution, but the depiction of priests and other ranking officials engaged in sex acts suggests political origins as well.

It was not until the invention of the printing press by Johannes Gutenberg that sexually explicit images entered into any type of mass circulation in the western world. Before that time, erotic images, being hand made and expensive, were limited to upper class males. Even the British Museum had a Secretum filled with a collection of ancient erotica donated by the upper class doctor, George Witt in 1865. The remains of the collection, including his scrapbooks, still reside in Cupboard , though the majority of it has recently been integrated with the museum's other collections." :Wikipedia.