Research Material
This page was set up before our future changed on March 25, 2022. Some prophecies were true for thousands of years, such as with World War III and the Antichrist from the Book of Daniel written during the time of the Babylonians. These prophecies stood the test of time, only to find that the future changed just a few years prior to their realisation. Nonetheless, as you may be interested in investigating the matters raised in Extinction Level Event, I have a few links you might find helpful.
The Prophets and Our Times by Rev. R. Gerald Culleton
This book provides an opportunity to look further into the context of the quotes used in Extinction Level Event. There is a lot of information in this book. It is a pdf file.
Marie-Julie Jahenny, The Breton Stigmatist by Marquis de la Franquerie
Marie-Julie Jahenny provides such important information about our future that this book is well worth a read. It is a pdf file.
http://www.todayscatholicworld.com/marie-julie-jahenny-prophecy.pdf
The Christian Trumpet compiled by Pellegrino [Gaudentius Rossi], a Missionary Priest
This book also has some useful information. It is a pdf file.
https://www.eclipseofthechurch.com/Library/The%20Christian%20Trumpet.pdf
The Catholic Prophecy – The Coming Chastisement by Yves Dupont
Although likely to be very helpful, I have only researched the chapter titled 47b. Please note that I am not interested in the author's comments, remarks, or opinions; these are at the risk of the reader, as I am only concerned with the relevant prophecies Yves Dupont quotes. It is a pdf file.
http://theheckhypothesis.com/pdf/YVES%20DUPONT'S%20%20COMMENTARIES%20ON%20PRIVATE%20%20PROPHECY.pdf
The Bible
The Bible has many references to the Three Days of Darkness, but there are two areas that are particularly helpful. While one of these is the Book of Revelation, the other is all of the Gospel According to Matthew Chapter 24, which covers some of the events during both Tribulation, as well as the Three Days of Darkness.
So that interpretation is kept to a minimum, I would suggest reading the King James Version, with the website below offering a very user-friendly format - after selecting the version, click on ‘Bible Book List’.
Tui bei tu suo yin 推背圖索隱
This Chinese book of prophecy has the potential of being very helpful but is in Chinese.
It is a pdf file.
https://openresearch-repository.anu.edu.au/handle/1885/111997
Padre Pio Devotions – A Short Biography
This website page provides insight into the life of Saint Pio.
Mystics of the Church, the Coming Era of the Holy Spirit and Mary – The Prophecy of Madeleine Porsat
This website page helps to give some insight into the Marian apparitions experienced by Madeleine Porsat.
http://www.mysticsofthechurch.com/2015/07/the-prophecy-of-madeleine-porsat.html
Garabandal Apparitions
This Wikipedia website page is a good place to start with the Garabandal apparitions that happened in Northern Spain. They are considered to be the continuation of the Fátima messages. Garabandal is also covered in The Catholic Prophecy - The Coming Chastisement above.