Asimov, Isaac. PEBBLE IN THE SKY.
Garden City: Doubleday & Co., 1950. First edition of the AUTHOR’S FIRST BOOK, preceded only by his Ph.D. dissertation.

To Joseph Schwartz it had happened between one step and the next. He had lifted his right foot to clear the Raggedy Ann doll and for a moment he felt dizzy - as though for the merest trifle of time a whirlwind had lifted him and turned him inside out. When he placed his right foot down again, all the breath went out of him in a gasp and he felt himself slowly crumple and slide down to the grass.