Magical Creatures is a 16-book series with 16 released primary works first released in 1819 with contributions by John William Polidori, Rochelle Kronzek, Luiz Antonio Aguiar, George Chetwynd Griffith, W.B. Yeats, Thomas Crofton Croker, Wirt Sikes, Varla Ventura, Edith Nesbit, Reginald Bakeley and 7 others.