Conversation so far:
When did Walter Cronkite  join CBS Evening news?
On April 16, 1962, Walter Cronkite succeeded Douglas Edwards as anchorman of the CBS's nightly feature newscast.
for how long was Walter Cronkite the anchor of CBS evening News?
Walter Cronkite served as anchorman for the CBS Evening News for 19 years.

Question: What kind of stories did Walter report?
Self-contained rewrite: What kind of stories did Walter Cronkite report?