"Unaussprechlichen Kulten" is believed to have been written by Friedrich Wilhelm von Junzt. The first edition of the German text (referred to by some as "the Black Book") appeared in 1839 in Düsseldorf. The English edition was issued by Bridewall in London in 1845, but (being meant to sell purely based on shock-value) contained numerous misprints and was badly translated. A heavily (a full quarter of the original material) edition was later issued in New York by Golden Goblin Press in 1909, but sold few copies as its high production costs made it prohibitively expensive. Original editions in German have a heavy leather cover and iron hasps. Few copies of the earliest edition still exist because most were burnt by their owners when word of von Junzt's gruesome demise became common knowledge. An edition is known to be kept in a locked vault at the Miskatonic University library and some book collectors/occult scholars have managed to find copies. At least one copy is known to have been present at the abandoned church on Federal Hill in Lovecraft's short story "The Haunter of the Dark".