You've been asked to provide the introduction for one-day conference, at which U.S. correctional policy will be discussed. Many of the people at the workshop aren't necessarily familiar with correctional history and trends. You prepare your notes ahead of time, being sure to include the following:

-The origins of the U.S. correctional system
-Key events during the history of corrections in the U.S.
-Description of the structure of the U.S. correctional system?identify different levels and types of correctional institutions
-Current trends in correctional policy.

Could you include references too, please?