Title: Sky Lift - Short Story
Written: August-September 1952   Pages: 174
 
Description:
Published version of “Sky Lift” in Imagination, November 1953 (2 copies). Pages 48-59 are notes, calculations, and diagrams for story. Page 60 discarded start to story. First, second, and third drafts of manuscript, all with extensive hand-edits. Another draft of manuscript with no edits.
 
Publication: 
Imagination November 1953 and collected into The Menace From Earth (1959); Other Anthology appearances: A Century of Science Fiction  (ed. Damon Knight, Simon & Schuster, 1962); Off The Main Sequence:  The Other Science Fiction of Robert Heinlein (ed. Andrew Wheeler; introductions by Greg Bear and Michael Cassutt:  SFBC, October 2005).
 
Notes: Alternate title: A Matter of Weight.