John Wycliffe on the Web: Primary
On the Sacrament of Communion
Modern English translation excerpted from Tracts and Treatises of John de Wycliffe, edited by Robert Vaughan, prepared for the web by Belle Tuten of Emory University and placed online at Paul Halsall's Medieval Sourcebook.
De Civili domino
Latin text based on the edition by R.L. Poole, Ioannis Wycliffe Tractatus de Civili Dominio Liber Primus (1885) and collated by John Kilcullen.
The Wyclif Bible
A selection of primary texts by Wyclif and a useful bibliography, at the Bible Research website.
The Twelve Conclusions of the Lollards
Modern English translation at the Geoffrey Chaucer Page, Harvard.
The Examination of Master William Thorpe
This excerpt from Thorpe's own account of his appearance before the Archbishop of Canterbury illustrates Lollard beliefs on pilgrimages.
More at the Medieval History Site