Walter Olson highlights a remarkable reader advisory attached to a $4.95 paperback version of the Constitution, Declaration of Independence, and Articles of Confederation:

This book is a product of its time and does not reflect the same values as it would if it were written today. Parents might wish to discuss with their children how views on race, gender, sexuality, ethnicity, and interpersonal relations have changed since this book was written before allowing them to read this classic work.

Of course, several of the actual amendments to the Constitution reflect a few of those changes, but I suppose you can never be too safe when it comes to the children.