Conversation so far:
What year did Harry Caray play for the Cardinals?
Caray caught his break when he landed the job with the Cardinals in 1945 and.
What position did he play?
according to several histories of the franchise, proved as expert at selling the sponsor's beer as he'd been in selling the Cardinals on KMOX.
How long did he work with them?
Following the 1969 season, the Cardinals declined to renew Caray's contract after he had called their games for 25 years, his longest tenure with any sports team.

Question: Why was he let go after so long?
Self-contained rewrite: Why was Harry Caray let go from the Cardinals after so long?