A range of different resources were used by Latin scholars in the 8th and 9th centuries to learn Greek. Examples of some of these resources can be seen in Harley 5642, written around 900 CE. In addition to simple dialogues and descriptive passages presented in parallel Greek and Latin columns, the manuscript also contains basic grammatical texts and handbooks. Most of these texts date back to late antiquity, and would initially have been used to instruct Greek-speaking children in Latin.
The manuscript forms part of the Harley Collection, formed by Robert Harley (1661–1724), 1st earl of Oxford and Mortimer, politician, and Edward Harley (1689–1741), 2nd earl of Oxford and Mortimer, book collector and patron of the arts. The Harley Collection is one of the foundation collections of the British Library.