That house was actually the Hennepin Canal Trail visitor's center. After atepping inside I also met Ken. They gave me a slew of maps and some rare Clif bars I've never tasted before. They were both very helpful and so before I left I signed their guestbook.
For more information:
Friends of Hennepin Canal
Illinois Department of Natural Resources
16006-875 E. Street
Sheffield, IL 61361