HELLO ESTELLE, THE CALDWELL PENITENTIARY YOU ARE ASKING ABOUT IS THE ESSEX COUNTY PENITENTIARY WHICH IS IN CALDWELL, N.J. MY DAD WORKED AS A CORRECTIONS OFFICER AT THE "PEN" FOR 33 YEARS. IT WAS BUILT PROBABLY IN THE 1800'S AND STILL EXISTS TODAY. I DON'T KNOW HOW YOU WOULD OBTAIN RECORDS ON FORMER PRISONERS BUT YOU COULD CALL THE WARDENS OFFICE AND I AM SURE THEY WOULD TELL YOU HOW TO GO ABOUT IT. BOB SCHOTT - LAKELAND, FL.