Conversation so far:
When did Freddie King work with federal records?
King Records' owner, Syd Nathan, signed King to the subsidiary Federal Records in 1960.
Did Federal records produce records for Freddie King?
Between 1962 and 1965 Freddie King, one of the three Blues kings (Freddie, B.B. and Albert), released a series of albums, mostly instrumentals, for Federal.
Did they do any other records
Between 1962 and 1965 Freddie King, one of the three Blues kings (Freddie, B.B. and Albert), released a series of albums, mostly instrumentals, for Federal.

Question: What else is important about federal records
Self-contained rewrite: What else is important about federal records?