One other note from the experience:
One of the parents came with us on the field trip and we partnered up to walk around. While we were walking, she shared about her and her child going to interview the city leaders to find out more information on our town. She said the city couldn't believe we were doing something so interesting and important. She said the city has just been empty handed on how to share the towns history that they knew so little about.
Its comments like this that give me hope that even though we aren't finding tons of information, every little bit is so important and will be cherished!