On Three
Volume 1
| Volume | Issue | Date | Title |
| 1 | 1 | January, 1983 | Premier Issue |
| 1 | 2 | February/March, 1983 | Pascal Tutorial Begins |
| 1 | 3 | April/May, 1983 | SpeedBoot (Un) Lock |
| 1 | 4 | June/July, 1983 | Changing Your Keyboard |
Volume 2
| Volume | Issue | Date | Title |
| 2 | 1 | Undated, 1984 | Why Is Everyone So Excited About Lazarus? |
| 2 | 2 | Undated, 1984 | 512K Memory Upgrade Information |
Volume 3
| Volume | Issue | Date | Title |
| 3 | 1 | January, 1986 | Review: Word Juggler |
| 3 | 2 | February, 1986 | Graphically Speaking |
| 3 | 3 | March, 1986 | Directories /// |
| 3 | 4 | April, 1986 | BASIC Internals: A Look Inside | 3 | 5 | May, 1986 | Desktop Supremacy |
| 3 | 6 | June, 1986 | Music, Maestro, Please |
| 3 | 7 | July, 1986 | Data Plotting with Pkaso |
On Three was a magazine written for users of the Apple /// Computer.
The above inventory represents all of the issues I am aware of. It's easy to believe that there was a large gap around the time that Apple cancelled the Apple ///, but the two issues in two years seems like a bit more of a gap than I'd expect.
Anyone with additional information about this publication is encouraged to share it!