A Spectrum of Fantasy: The Bibliography and Biography of a Collection of Fantastic Literature

"First edition, 500 copies, 1980"--Verso t.p. Data via Open Library as per 2020-03-16 and Chalker/Owings Chalker/Owings mentions six states without precedence. However, they only describe 5 states accounting for 112 of the print run of 500 copies. Presumably, the remaining 388 copies were a trade edition (this record). Worldcat mentions the second volume, but it was a separate publication in 1994.