Bobby Knoop and Darrell Sutherland TTM Returns

I received two ttm returns today.

Bobby Knoop signed his 1966 and 1968 Topps Buy Back cards as well as the 1973 Topps Royals team card.

And Darrell Sutherland signed his 1966 Topps as well as the 1965 Mets team card.  I might be close to retiring this team card but will first check to see who else could sign it.