800 BC-Oldest non-Pentateuchal books of the Hebrew Bible (Book of Nahum, Book of Hosea, Book of Amos, and Book of Isaiah)

https://en.wikipedia.org/wiki/Book_of_Nahum

https://www.sbl-site.org/assets/pdfs/presidentialaddresses/JBL26_1_1Haupt1906.pdf

http://www.chabad.org/library/bible_cdo/aid/16194

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http://www.chabad.org/library/bible_cdo/aid/16155

https://en.wikipedia.org/wiki/Book_of_Hosea

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https://en.wikipedia.org/wiki/Book_of_Amos

http://www.chabad.org/library/bible_cdo/aid/16173

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https://en.wikipedia.org/wiki/Book_of_Isaiah

https://www.mgketer.org/mikra/12/1/1

http://www.mechon-mamre.org/p/pt/pt1001.htm