The Erotika Biblion Society was a pornographic publishing imprint in Victorian London formed by Harry Sidney Nichols and Leonard Smithers in 1888. One of their most notable publications was Teleny, or The Reverse of the Medal, thought to have been written by Oscar Wilde. The venture ended in 1909, after the death of Smithers.
References
Erotika Biblion Society Wikipedia(Text) CC BY-SA