| Abbott, R. | Eleusis: the card game | 2009 |
| Abraham, R.H. | Orpheus today | 2008 |
| Anonymous | Die Lehre von der Wiedergeburt im Buddhismus | 1984 |
| Anonymous | Pythagoras and human thinking | 2006 |
| Anonymous | Encounters at Delphi | 2008 |
| Anonymous | Oracles of Delphi | 2008 |
| Anonymous | An Orphic timeline | 2008 |
| Armstrong, S. | Ancient wisdom rises from the ashes | 2008 |
| Autelitano, C. | Life is number: the universe is music | 2009 |
| Broquet, A.J. | Orpheus Remembered: The Rediscovery of Orpheus During the Renaissance | 2008 |
| Chindemi, G. | Philosophical and scientifical reflections on the pythagorean Tetraktys | 2009 |
| Cuttjonn, E. | Just beneath the surface: transdisciplinary fume research at Delphi | 2008 |
| Czogalla, H. | Uber die Zahlenlehre der Natur von Eckartshausen | 1981 |
| Czogalla, H. | Philosophie und Wissenschaft | 1982 |
| Finger, B. | Secrets of the hidden scrolls | 2007 |
| Finger, B. | Apollonius of Tyana: history or fable? | 2009 |
| Francini, A. | Across the millennia: applying "Know thyself" to daily life | 2008 |
| Giangrande, G. | The gold Lamellae from Thessaly | 1991 |
| Giangrande, G. | Las dos fuentes en las laminillas Orficas | 1995 |
| Godwin, J. | The Orphic mysteries | 2008 |
| Goodart, S. | Shedding light on some Orphic gods | 2008 |
| Goodart, S. | The lesser mysteries of Delphi | 2009 |
| Guarducci, M. | Laminette auree 'Orfiche' | 1978 |
| Guarducci, M. | Nuove riflessioni sulla laminetta orfica di Hipponion | 1985 |
| Hofmann, A. | The message of the Eleusian mysteries for today's world | 2009 |
| Janssen, F.A. | Ad fontes - On the Bibliotheca Philosophica Hermetica | 1997 |
| Keller, M.L. | The ritual path of initiation into the Eleusian mysteries | 2009 |
| Kephalas, N.P. | The wisdom of the sages: the eleusian mysteries | 2009 |
| Leonessi, S. | The pythagorean philosophy of numbers | 2009 |
| Mallinger, J. | Pythagoras oder der Sonnenweg | 1972 |
| Mallinger, J. | Das Trophonium von Lebadeia | 1980 |
| Mead, G.R.S. | The theology of Orpheus | 2008 |
| Minicuci, G. | Pythagoras the teacher: from Samos to Metapontum | 2009 |
| Mylonas, G. | What we can learn about the Eleusian mysteries | 2009 |
| Perceval | Wort und Ton und deren Wirkungen sowie die Bedeutung dr Intonation | 1981 |
| Phelps, R. | The school of Pythagoras | 2009 |
| Pinchard, A. | The Salvific Function of Memory in Archaic Poetry, in the Orphic Gold Tablets and in Plato: What Continuity, What Break? | 2012 |
| Quispel, G. | De oorsprong van de Gnosis | 2001 |
| Richards, M. | Pythagoras and music | 2009 |
| Roggemans | Modern Rosicrucian groups | |
| Roggemans, M. | 1614 De FAMA FRATERNITATIS en de ORDO ROSAE CRUCIS | 2008 |
| Sanchez-Parodi, J. | The Eleusian mysteries and the bee | 2009 |
| Scheck, H. | Der Pilgerweg nach Delphi | 1979 |
| Scott, J. | Delphi | 2008 |
| Scott, J. | The mystery schools and the Rosicrucian Order | 2014 |
| Sultzbaugh, J.S. | Chromoacoustics: the science of sound and color | 2009 |
| Vividus | Die Uberlieferung zur Frage der Reincarnation bei den Griechen und im Rahmen des alten Orients .. | 1983 |
| Wise, M. | Discovery and publication of the Dead Sea Scrolls | 2007 |
| Yaeger, T. | The esoteric conception of divinity in the ancient world | 2004 |