 The movie suggests that something is written on the back of the  Declaration of Independence. It is true that something is written on  its back. The writing on the back of the Declaration of Independence  reads: "Original Declaration of Independence dated 4th July 1776"  and it appears on the bottom of the document, upside down. While no  one knows for certain who wrote it, it is known that early in its  life, the large parchment document (it measures 29 3/4 inches by 24  ½ inches) was rolled up for storage. So, it is likely that the  notation was added simply as a label.