Branch Rickey signed a contract with Jackie Robinson that would bring him to the major leagues
The election results were contested by the opposing party due to disputes over it.
It generally depends on the teacher you're working with. But to be on the safe side, I'd incorporate your first and last name, the date the assignment was finished on, which assignment it was, and your teachers name. Anything else like lesson number and school name can be left out, but you might want to annalyse it before forgetting, or adding it in.