It appears an online Nagambie Heritage Trail is not going to be achievable at present. As an alternative I give you a Nagambie Heritage Photo Gallery. Viewed in conjunction with the previous gallery of period housing, I think it provides a good perspective on the streetscapes. If you are ever in town and want to engage with a Heritage Trail, I can recommend visiting the Nagambie Historical Society in High Street and obtaining a hard copy.
Nagambie Heritage Photo Gallery