Note: A third edition was published in 1878, but we do not have access to the contents of that edition. It likely contains all of the speculative fiction poems in the 1828 edition. The British Library and Standford Libraries have records referring to a 1714 edition which are most likely erroneous references to the 1814 edition (since it is before the author was born and exactly a hundred years before the first edition; it is likely a typographical misentry that was copied).