Picture of the Lincoln Memorial

To find the picture of the Lincoln Memorial as asked by Caleb Smith you do the following:
 * Go to the Museum of History
 * Go into the Museum of History Lower Halls
 * Go into the Museum of History Offices
 * In the main great room (with a turret) there are stairs leading to the second floor. Go up the stairs and immediately to your left you will see a desk.  The poster is behind that desk.