Canons
First Canonical Epistle, Letter to Diodorus, Letter to His Suffragans, Letter to the Chorepiscopi, On the Holy Spirit, Chapter 27, Second Canonical Epistle, Third Canonical Epistle, Canons of St. Basil, Letter 236, Letter to Gregory a Presbyter, Letter to the Nicopolitans
Epistle 2
Translated by John Henry Cardinal Newman and the Rev. Blomfield Jackson. In HTML, at the St. Pachomius Orthodox Library. To St. Gregory the Theologian, on monasticism.
Epistle 7
Blomfield Jackson translation. In HTML, at the St. Pachomius Orthodox Library. To St. Gregory the Theologian.
Letters
Blomfield Jackson translation. From A Select Library of Nicene and Post-Nicene Fathers of the Christian Church, second series, vol. 8. Each letter in its own HTML file, with a link at the top to table of contents. At Christian Classics Ethereal Library.
On the Spirit
Blomfield Jackson translation. From A Select Library of Nicene and Post-Nicene Fathers of the Christian Church, second series, vol. 8. In HTML, with notes, at Christian Classics Ethereal Library. 235K.
Prayer of St. Basil the Great
At the Orthodox Christian Page in America.