An expansion of the Essay "Where To?", where Heinlein revisits some of his predictions from 15 years before.
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1966 |
|
The Worlds of Robert A. Heinlein | Ace Books | Collection | 7 |
| July 1970 |
|
The Worlds of Robert Heinlein | New English Library | Collection | 7 |
| July 1971 |
|
Galassia, #145 | Casa Editrice La Tribuna | MAGAZINE | 7 |
| January 1972 |
|
Welten | Heyne | Collection | 7 |
| April 1972 |
|
The Worlds of Robert Heinlein | New English Library | Collection | 7 |
| April 1975 |
|
The Worlds of Robert Heinlein | New English Library | Collection | |
| February 1977 |
|
Turning Points: Essays on the Art of Science Fiction | Harper & Row | Nonfiction | 238 |
| November 1978 |
|
The Worlds of Robert Heinlein | New English Library | Collection | 7 |
| December 1979 |
|
Welten | Pabel | Collection | 7 |
| July 1980 |
|
Destinies, Summer 1980 | Ace Books | Anthology | 61 |
| October 1980 |
|
Expanded Universe: The New Worlds of Robert A. Heinlein | Grosset & Dunlap | Collection | 309 |
| February 1981 |
|
Expanded Universe: The New Worlds of Robert A. Heinlein | Ace Books | Collection | 309 |
| August 1982 |
|
Expanded Universe | Ace Books | Collection | 309 |
| August 1982 |
|
Expanded Universe | Ace Books | Collection | 309 |
| May 1983 |
|
Expanded Universe | Ace Books | Collection | 309 |
| May 1983 |
|
Expanded Universe | Ace Books | Collection | 309 |
| March 1985 |
|
Expanded Universe | Ace Books | Collection | 309 |
| March 1986 |
|
Expanded Universe | Ace Science Fiction Books | Collection | 309 |
| August 1991 |
|
Expanded Universe | Ace Books | Collection | 309 |
| July 2005 |
|
Expanded Universe | Baen Books | Collection | 373 |
| February 2007 |
|
Expanded Universe | Baen Books | Collection | 373 |
| February 2010 |
|
Expanded Universe | The Virginia Edition | Collection | 279 |
| August 2010 |
|
Expanded Universe | Baen Books | Collection | 373 |
| May 2014 |
|
Turning Points: Essays on the Art of Science Fiction | Gateway / Orion | Nonfiction | |
| March 2015 |
|
Expanded Universe: Volume Two | Phoenix Pick | Collection | 39 |
| March 2015 |
|
Expanded Universe: Volume Two | Phoenix Pick | Collection | |2 |
| July 2015 |
|
Expanded Universe: Volume Two | Blackstone Audio | Collection | |2 |
| April 2023 |
|
Expanded Universe: Volume Two | CAEZIK SF & Fantasy | Collection | |2 |