Everything else Jehoash did while he was king, including his brave deeds and how he defeated King Amaziah of Judah, is written in The History of the Kings of Israel.
Jehoash died and was buried in Samaria beside the other Israelite kings. His son Jeroboam then became king.
Everything else Ahaziah did while he was king is written in The History of the Kings of Israel.
Jeroboam son of Jehoash became king of Israel in the fifteenth year of Amaziah's rule in Judah. Jeroboam ruled 41 years from Samaria.