DAW Books, 1976 [not stated]; 3rd printing per number line. Nice collection of some of Leiber's stories and essays, most originally published in the 1950's and 60's. Also includes two original tales, "Cat's Cradle" and "Beauty and the Beasts" [Fafhrd and the Gray Mouser]. There was a follow-up volume, "The Second Book of Fritz Leiber" published in 1975.
Used availability for Fritz Leiber's The Book of Fritz Leiber
1980 : USA Hardback
January 1900 : USA Mass Market Paperback
January 1974 : USA Mass Market Paperback