John Gill Commentary 2 Chronicles 26:22

"Now the rest of the acts of Uzziah, first and last, did Isaiah the prophet, the son of Amoz, write." — 2 Chronicles 26:22 (ASV)

Now the rest of the acts of Uzziah, first and last
What were done by him, both in the beginning and latter end of his reign:

did Isaiah the prophet, the son of Amoz, write :
not in his own prophecy, but in the history of his own times, which was usual for every prophet to write, though now lost, see (2 Kings 15:6) .