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Please note: English translations for many of Galileo's original works are available in The Essential Galileo, which is held in Bortz Library's collections. Additional translations of Galileo's works may also be available in other books held in the library collections.

Below you will find links to additional primary sources that are available for free online. 

General Resources

Inquisition and First Judgement, 1616

An English translation of Francesco Ingoli's 1616 letter disputing the Copernican system is available as an appendix in Setting Aside All Authority: Giovanni Battista Riccioli and the Science Against Copernicus in the Age of Galileo. This text is an ebook in the Bortz Library Collections (you may have to use your HSC login credentials to view this item):

Bust of Galileo

Bust of Galileo Galilei, 1674 - 1677

Marcellini, Carlo

Museo Gallileo, Florence. Museo Galileo Virtual Museum 

Accessed 5 February, 2018

Trial and Second Judgement, 1633

Copyright Notice

Many of the sources linked above have been provided by the Internet Modern History Sourcebook. Before using these sources, please pay attention to the copyright notice provided by the Modern History Sourcebook, which has been reproduced below: 


This text is part of the Internet Modern History SourcebookThe Sourcebook is a collection of public domain and copy-permitted texts for introductory level classes in modern European and World history.

Unless otherwise indicated the specific electronic form of the document is copyright. Permission is granted for electronic copying, distribution in print form for educational purposes and personal use. If you do reduplicate the document, indicate the source. No permission is granted for commercial use of the Sourcebook.

© Paul Halsall Aug 1997