Takeoff! can best be described not as a short story collection, but as a Randall Garrett Miscellany. In addition to some of Garrett's best short fiction, the book contains some of his science fictional pastiches ("Backstage Lensmen") and several reviews in verse of prominent science fiction and fantasy titles.
His pseudonyms include: Gordon Randall Garrett, Gordon Aghill, Grandal Barretton, Alexander Blade, Ralph Burke, Gordon Garrett, David Gordon, Richard Greer, Ivar Jorgenson, Darrel T. Langart, Blake MacKenzie, Jonathan Blake MacKenzie, Seaton Mckettrig, Clyde (T.) Mitchell, Mark Phillips (with Laurence Janifer), Robert Randall, Leonard G. Spencer, S.M. Tenneshaw, Gerald Vance.
Randall Garrett's first collection of parodies and pastiches of many well known authors. My favorite story in this collection was one entitled "The Horror Out of Time", a Lovecraft pastiche with an interesting twist.