Hint for clue #5

From the Town Square, you can see most of the buildings around that area. The Polaroids in the envelope are of details on buildings in that area. When you identify WHERE those details are from, you’ll have the names you need. There are five Polaroids. Each Polaroid probably stands for one letter. So you’d need to determine which order the Polaroids should go, and then when you have the names that are associated with each image, which letter you need to pull.