The following books on Gregorian Chant are currently available from

Book Post (Music)
The Province Centre
Locked Bag 3031

        From Roman Rite to Franco-Roman Rite. Sources of Gregorian Chant II. Were the Dark Ages so very dark? Not for the Christian Liturgy it seems. This is the second in the series Sources of Gregorian Chant and takes in the period from 595AD, with the accession of Pope St Gregory I, to the birth of musical notation c.850AD.There are 14 Chapters including The Age of Gregory, Gallican, Celtic and Hispanic Churches, Anglo-Saxon Missionaries, Liturgy and Books, including the first Sacramentaries, The Rise and Spread of Islam, The Court of Charlemagne and his request for a Gregorianum, and Liturgy and Music in the Ninth Century. The work includes lists and descriptions of manuscripts, nine maps, twelve facsimiles, charts of dynasties, a Dateline, Bibliography, and Indexes. $25 posted, including GST, to anywhere in Australia.
$45AUS posted to anywhere in the world 138pp A4 ISBN 0-9579976-6-3

       Gregorian Chant and Early Music. A Handbook. This little gem is suitable for advanced students in music, or anyone interested in music history. It has chapters on the earliest tonaries, on the development of notation of pitch and rhythm, and on organs and liturgical dance in churches. It is an overview of Western music from early Christianity to the crystallization of modern tonality c.1650. It has maps, illustrations, Bibliography, Index. $15AUS posted to anywhere in the world. 52pp A5 ISBN 0-9579976-3-9

         The Years Before Gregory. Sources of Gregorian Chant I.

This is a more detailed study of the evolution of Christian music from Apostolic Times up until the era of Pope St
Gregory I the Great (d.604). It has a list of manuscripts with locations and descriptions, maps, illustrations, Bibliography, Index. $15 posted to anywhere in Australia 56pp $17AUS posted to anywhere in the world 56pp A4 ISBN 0-9579976-7-1

        The Age of Print. Sources of Gregorian Chant V
        The Gregorian Reform. Sources of Gregorian Chant III
(from 900).