| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| July 1935 |
|
The Circus of Dr. Lao | The Viking Press | Novel | |
| August 1935 | The Circus of Dr. Lao | The Viking Press | Novel | ||
| August 1936 | The Circus of Dr. Lao | The Viking Press | Novel | ||
| October 1956 |
|
The Circus of Dr. Lao and Other Improbable Stories | Bantam Books | Anthology | 1 |
| August 1961 |
|
The Circus of Dr. Lao | Compass / Viking | Novel | |
| April 1964 |
|
The Circus of Dr. Lao | Bantam Books | Novel | |
| June 1964 | The Circus of Dr. Lao | Compass / Viking | Novel | ||
| 1966 |
|
The Circus of Dr Lao | Penguin Books | Novel | 5 |
| June 1968 |
|
The Circus of Dr. Lao | Compass / Viking | Novel | 7 |
| May 1974 |
|
The Circus of Dr. Lao | Avon | Novel | 1 |
| September 1976 | The Circus of Dr. Lao | Equinox / Avon | Novel | ||
| 1982 |
|
The Circus of Dr. Lao | The Limited Editions Club | Novel | |
| August 1983 |
|
The Circus of Dr. Lao | Vintage Books | Novel | 1 |
| 1984 |
|
The Circus of Dr. Lao | Janus Press | Novel | |
| April 2002 |
|
The Circus of Dr. Lao | University of Nebraska Press | Novel | 9 |
| June 2011 |
|
The Circus of Dr. Lao | Bison Books | Novel | 9 |