Thinkers Pr Inc / Chessco · Thinkers' Press
| title | ISBN-13 | year of publication |
|---|---|---|
| Action Chess: Purdy's 24 Hours Opening Repertoire | 978-0-938650-79-9 | 1999 |
| C.j.s. Purdy's Fine Art Of Chess Annotation And Other Thoughts | 978-1-888710-19-9 | 2004 |
| CJS Purdy's Fine Art of Chess Annotation and Other Thoughts, Vol. 3 | 978-0-938650-85-0 | 2002 |
| C.J.S. Purdy's Fine Art of Chess Annotation and Other Thoughts Volume 2 | 978-0-938650-83-6 | 2001 |
| Thermodynamics of systems in nonequilibrium states | 978-1-888710-08-3 | 2002 |
J. T. · R.J. · R J T · R. T. · Ralph Tykodi