Conversation so far:
How was Honus Wagner's life after baseball?
Wagner was not finished playing baseball after his retirement from major league baseball. He managed and played for a semi-pro team.
Did Honus Wagner have any hobbies?
Did Honus Wagner teach others?
After retirement, Wagner served the Pirates as a coach for 39 years, most notably as a hitting instructor from 1933 to 1952.
Was Honus Wagner married?
In 1916, Wagner married Bessie Baine Smith.
Did Honus Wagner have kids?
Honus Wagner had three daughters, Elva Katrina, Betty Baine, and Virginia Mae.
Did anything significant happen after Honus Wagner's career?
Wagner died on December 6, 1955 at the age of 81.

Question: What did he die from?
Self-contained rewrite: What did Honus Wagner die from?