I found your beautiful photo via deep google search of Herrontown Woods. We have a Friends of Herrontown Woods nonprofit that maintains the trails there and is working to acquire and repair the buildings. We have a facebook page and I've posted lots of info about our work and research into the history of the buildings at VeblenHouse.org. The land and buildings were donated to Mercer County by Oswald and Elizabeth Veblen. Oswald was a renowned mathematician and visionary. The county was not taking care of the park, so our group of volunteers has stepped in.