2 Kings (Author Compiled by Isaiah and Jeremiah from records of Nathan, Gad, Iddo, Ahijah, Jehu and others.)
20:20And the rest of the matters of Hezekiah, and all his might, and how he made the pool, and the conduit, and bringeth in the waters to the city, are they not written on the book of the Chronicles of the kings of Judah?
Original from The Bible Foundation - bf.org. They claim public domain status for their original text.