<b>From the first page of the Signet 6th printing:</b> "An electronics engineer invents a wizard robot... only to find himself shanghaied by his ruthless partner and his gold-digging fiancee. The crafty pair forces him to submit to the "long sleep" - suspended animation for thirty years.
<p>But when he wakes up in the year 2000 A.D. the inventor makes a startling discovery. He learns that it is possible now to twist time forwards or backwards. And so he returns to the past bent on a mission... of revenge."
| Year | Award | Category | Status |
|---|---|---|---|
| 1975 | Locus Poll Award | All-Time Best Novel | Nominee/Finalist |
| 1987 | Locus Poll Award | All-Time Best SF Novel | Nominee/Finalist |
| 1998 | Locus Poll Award | All-Time Best SF Novel before 1990 | Nominee/Finalist |
| 2012 | Locus Online | 20th Century Science Fiction Novel | Nominee/Finalist |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| October 1956 |
|
The Magazine of Fantasy and Science Fiction, October 1956 | Fantasy House, Inc. | MAGAZINE | 3 |
| November 1956 |
|
The Magazine of Fantasy and Science Fiction, November 1956 | Fantasy House, Inc. | MAGAZINE | 3 |
| December 1956 |
|
The Magazine of Fantasy and Science Fiction, December 1956 | Fantasy House, Inc. | MAGAZINE | 35 |
| 1957 |
|
Ciencia y fantasía, Numero 8 | Novaro | MAGAZINE | 2 |
| 1957 |
|
Ciencia y fantasía, Numero 9 | Novaro | MAGAZINE | 2 |
| 1957 |
|
Ciencia y fantasía, Numero 10 | Novaro | MAGAZINE | 29 |
| June 1957 |
|
The Door Into Summer | Doubleday | Novel | |
| 1958 | 夏への扉 | 講談社 | Novel | ||
| 1958 | Puerta al verano | E.D.H.A.S.A. | Novel | 7 | |
| January 1958 |
|
The Door Into Summer | Doubleday / SFBC | Novel | |
| December 1958 |
|
Fiction, #61 | OPTA | MAGAZINE | 3 |
| January 1959 |
|
Fiction, #62 | OPTA | MAGAZINE | 71 |
| February 1959 |
|
Fiction, #63 | OPTA | MAGAZINE | 65 |
| February 1959 |
|
Urania #197 | Mondadori | MAGAZINE | 3 |
| March 1959 |
|
The Door Into Summer | Signet / New American Library | Novel | 5 |
| March 1960 |
|
The Door Into Summer | Panther | Novel | 7 |
| October 1963 |
|
Tür in die Zukunft | Goldmann | Novel | |
| October 1963 |
|
Tür in die Zukunft | Goldmann | Novel | |
| November 1963 |
|
The Door Into Summer | Doubleday | Novel | |
| March 1964 |
|
The Door Into Summer | Signet / New American Library | Novel | 5 |
| March 1964 |
|
The Door Into Summer | Signet / New American Library of Canada | Novel | 5 |
| 1966 |
|
Escala no tempo | Livros do Brasil | Novel | |
| 1966 | Puerta al verano | E.D.H.A.S.A. | Novel | ||
| May 1966 |
|
The Door Into Summer | Signet / New American Library of Canada | Novel | 5 |
| January 1967 |
|
Tür in die Zukunft | Goldmann | Novel | |
| November 1967 |
|
The Door Into Summer | Gollancz | Novel | |
| August 1968 |
|
Urania #494 | Mondadori | MAGAZINE | 3 |
| December 1968 |
|
The Door Into Summer | Signet / New American Library of Canada | Novel | 5 |
| 1969 |
|
The Door Into Summer | Signet / New American Library | Novel | 5 |
| 1969 | The Door Into Summer | Gollancz | Novel | ||
| 1970 |
|
Une porte sur l'été | Éditions Rencontre | Novel | 13 |
| July 1970 |
|
The Door Into Summer | Pan Books | Novel | 7 |
| 1973 | The Door Into Summer | Gollancz | Novel | ||
| 1973 |
|
Une porte sur l'été | J'ai Lu | Novel | |
| 1974 |
|
The Door Into Summer | Pan Books | Novel | 7 |
| 1974 |
|
Tür in die Zukunft | Goldmann | Novel | |
| June 1975 |
|
Millemondiestate 1975: Tre romanzi completi di Robert A. Heinlein | Mondadori | Omnibus | 341 |
| 1977 |
|
Dan maar de kou in | Bruna | Novel | |
| July 1977 |
|
The Door Into Summer | Pan Books | Novel | 7 |
| 1978 |
|
Dörren till sommaren | Delta (Stockholm) | Novel | |
| September 1978 |
|
Une porte sur l'été | J'ai Lu | Novel | 5 |
| March 1979 | The Door Into Summer | Signet / New American Library | Novel | ||
| March 1979 |
|
The Door Into Summer | Signet / New American Library of Canada | Novel | 5 |
| August 1979 |
|
The Door Into Summer | Gregg Press | Novel | |
| January 1980 |
|
Tür in die Zukunft | Goldmann | Novel | |
| October 1980 |
|
A Heinlein Trio | Nelson Doubleday / SFBC | Omnibus | 337 |
| 1982 |
|
Tür in die Zukunft | Goldmann | Novel | |
| July 1982 |
|
La porta sull'estate | Mondadori | Novel | |
| 1983 |
|
The Door Into Summer | Signet / New American Library | Novel | |
| September 1985 | The Door Into Summer | Gollancz | Novel | ||
| 1986 |
|
A porta para o verão | Caminho | Novel | |
| January 1986 |
|
Das große Robert A. Heinlein Lesebuch | Goldmann | Omnibus | 7 |
| September 1986 |
|
The Door Into Summer | Gollancz | Novel | |
| September 1986 |
|
Puerta al verano | Martínez Roca | Novel | |
| November 1986 |
|
The Door Into Summer | Del Rey / Ballantine | Novel | 1 |
| 1987 |
|
Robert Heinlein presenta Puerta al verano et Amos de títeres | Edisan | Omnibus | 9 |
| August 1987 |
|
A Heinlein Trio | Nelson Doubleday / SFBC | Omnibus | 337 |
| 1993 |
|
Drzwi do lata | Wydawnictwo Amber Sp. z o.o. | Novel | |
| October 1993 |
|
Die Tür in den Sommer | Bastei Lübbe | Novel | 5 |
| December 1993 |
|
The Door Into Summer | Del Rey / Ballantine | Novel | |
| 1995 | Dvere do léta | Laser | Novel | ||
| 1996 |
|
Врата към лятото | Офир | Novel | |
| May 1996 |
|
Une porte sur l'été | J'ai Lu | Novel | |
| May 1997 |
|
The Door Into Summer | Del Rey / Ballantine | Novel | 1 |
| August 2000 |
|
The Door Into Summer | Gollancz | Novel | |
| October 2001 | The Door Into Summer | Sagebrush Education Resources | Novel | ||
| 2002 |
|
Puerta al verano | La Factoría de Ideas | Novel | |
| February 2003 |
|
The Door Into Summer | Science Fiction Book Club | Novel | |
| January 2006 |
|
The Door Into Summer | Blackstone Audiobooks | Novel | |
| January 2006 |
|
The Door Into Summer | Blackstone Audiobooks | Novel | |
| January 2006 |
|
The Door Into Summer | Blackstone Audiobooks | Novel | |
| October 2006 |
|
The Door Into Summer | Blackstone Audio | Novel | |
| November 2006 |
|
The Door Into Summer | Meisha Merlin | Novel | 1 |
| April 2008 |
|
The Door Into Summer | The Virginia Edition | Novel | 1 |
| May 2011 |
|
The Door Into Summer | Spectrum Literary Agency | Novel | |
| July 2012 |
|
The Door Into Summer | Blackstone Audio | Novel | |
| December 2013 |
|
The Door Into Summer | Gollancz / Orion | Novel | 1 |
| December 2013 |
|
The Door Into Summer | Gollancz / Orion | Novel | |
| 2015 | The Door Into Summer | The Easton Press | Novel | ||
| July 2016 |
|
Die Tür in den Sommer | Heyne | Novel | |
| July 2016 |
|
Die Tür in den Sommer | Heyne | Novel |