Come and celebrate Henry's birthday with local historian Richard Smith. Smith will portray Henry David Thoreau on his 30th birthday in 1847 for the last time. He will receive guests at the Thoreau House Replica near the main parking lot. This is an informal rolling program, so you can stop at any time between 12:00 p.m. and 2:00 p.m. On sunny days, holidays, and weekends, Walden Pond often closes due to capacity. Please check DCR Park Alerts for closures at www.mass.gov/parkalerts.   Reasonable accommodations are available upon request. Call 978-405-2082