Sheffield Non Profit Organizations 800 N Main St Landmark Volunteers provide spring and summer service opportunities for high school students at 63 cultural, environmental, historical, and social service programs nationwide, including Tanglewood, Hole in the Wall Gang Camp, International Tennis Hall of Fame, and Olympic National Park. Sheffield MA Non Profit Organizations Landmark Volunteers www.volunteers.com volunteer volunteering volunteers volunteerism teen teens high school teen volunteer high school volunteer student volunteer volunteer work volunteer job volunteer opportunities summer volunteer volunteer service volunteer services v volunteer volunteering volunteers volunteerism teen teens high school teen volunteer high school volunteer student volunteer volunteer work volunteer job volunteer opportunities summer volunteer volunteer service volunteer services v Business Reviews Landmark Volunteers Testimonials