MILFORD, PA — Bill Dauer, acting director of Grey Towers, left, signs a memorandum of understanding with President Fred Guendel of the Grey Towers Heritage Association at an event honoring the volunteers who donate their time to the national historic site. The memorandum formalizes the relationship between the two organizations and will assist in the already strong and productive partnership. Visit www.greytowers.org or www.fs.fed.us/gt.