- A Pocket Dictionary: Welsh-EnglishAuthor: William RichardsReleased on Project Gutenberg: November 2, 2006
- Cartrefi CymruAuthor: Edwards, Owen Morgan, SirReleased on Project Gutenberg: January 1, 2003
- CeiriogAuthor: John Ceiriog Hughes, Edwards, Owen Morgan, SirReleased on Project Gutenberg: October 1, 2002
- Cerddi'r Mynydd Du: Sef Caneuon Hen a DiweddarAuthor: Griffiths, W., called G. ap Lleision [Compiler], Llew MorganReleased on Project Gutenberg: September 6, 2007
- Gwaith AlunAuthor: John Blackwell, Samuel Maurice Jones, Thomas, John [Photographer]Released on Project Gutenberg: February 1, 2005
- Gwaith Mynyddog. Cyfrol IIAuthor: Mynyddog, Edwards, Owen Morgan, SirReleased on Project Gutenberg: December 31, 2004
- Gwaith Samuel RobertsAuthor: Samuel Roberts, Edwards, Owen Morgan, SirReleased on Project Gutenberg: December 14, 2004
- Gwaith Twm o'r Nant: Cyfrol 2Author: Thomas Edwards, Edwards, Owen Morgan, SirReleased on Project Gutenberg: July 1, 2001
- Y Gododin: A Poem of the Battle of CattraethAuthor: Aneirin, John WilliamsReleased on Project Gutenberg: February 1, 2006
- Yr HwiangerddiAuthor: Edwards, Owen Morgan, SirReleased on Project Gutenberg: May 1, 2005