Conversation so far:
When did Maurice Malpas join Dundee United?
He signed for Dundee United in August 1979.
What position did he play?
CANNOTANSWER.
Did he coach?
CANNOTANSWER.
Are there any other interesting aspects about this article?
Malpas won the SFWA Footballer of the Year award in 1991.
Were any other awards won?
He was inducted into the Dundee United Hall of Fame.

Question: When did thi happen?
Self-contained rewrite: When did Maurice Malpass's Dundee United Hall of Fame induction happen?