Originally published as "Threes (To Be Sung by Niels Bohr)" in the 2 March 1957 issue of The New Yorker.
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1958 |
|
Fantasia Mathematica | Simon & Schuster | Anthology | 278 |
| 1961 |
|
Fantasia Mathematica | Simon & Schuster | Anthology | 278 |
| May 1997 |
|
Fantasia Mathematica | Copernicus | Anthology | 278 |