This is a Warm Up/Review Lesson using images found on a first day cover (envelopes with commemorative stamp, postmark and artwork depicting the topic), to discuss the idea that the Constitution is America’s guiding light. Use the opening discussion to lead into the Preamble. What is in the Preamble that guides the delegates as they organize a new federal government? Lesson includes all images, primary sources, questions, a hands-on concluding activity and a GT Extension activity. It is based on the National Standards for U.S. history.