The ‘Zurich Letters’ consist of three letters written by Lady Jane to Henry Bullinger. A photo of one of the letters can be found in ‘Lady Jane Grey: A Tudor Mystery’ by Eric Ives.

Copies of the English translations can be found in:

Literary Remains of Lady Jane Grey by Nicholas H Nicolas. Also includes the original letters in Greek.

Documents of Lady Jane Grey: Nine Days Queen of England 1553 by James D Taylor Jr

Extracts from these letters can be found in:

Tudor Cousins: Rivals for the Throne by Dulcie M Ashdown

Lady Jane Grey by Hester W Chapman

Lady Jane Grey: Nine Day Queen of England by Faith Cook

The Nine Days’ Queen: Lady Jane Grey and Her Times by Richard Davey

Women Letter-Writers in Tudor England by James Daybell

Jane Grey Reine De 9 Jours (1537-1554) by Marguerite Fronville

The Story of Lady Jane Grey (Essay in Painting History: Delaroche and Lady Jane Grey) by John Guy

The Turbulent Crown: The Story of the Tudor Queens by Roland Hui

Lady Jane Grey: A Tudor Mystery by Eric Ives

The Sisters Who Would Be Queen: The Tragedy of Mary, Katherine and Lady Jane Grey by Leanda de Lisle

The Nine Days Queen: A Portrait of Lady Jane Grey by Mary Luke

Lady Jane Grey and the House of Suffolk by Alison Plowden

Princely Education in Early Modern Britain by Aysha Pollnitz

Original Letters Relative to the English Reformation, written during the Reigns of King Henry VIII, King Edward VI and Queen Mary (Volume One) translated and edited by Rev Hastings Robinson

Lives of the Tudor Princesses by Agnes Strickland

Crown of Blood: The Deadly Inheritance of Lady Jane Grey by Nicola Tallis