Exterior view of the Trask House, Beverly, Massachusetts, H-1228c Exterior view of the Trask House, Beverly, Massachusetts, H-1228d Exterior view of the Trask House, Beverly, Massachusetts, H-1228e Exterior view of Dr. Oliver Wendell Holmes's summer house, Beverly, Massachusetts, H-1229a Exterior view of Dr. Oliver Wendell Holmes's summer house, Beverly, Massachusetts, H-1229b Exterior view of the Woodbury House, Beverly, Massachusetts, H-1231 Exterior view of the Balch House, Beverly, Massachusetts, H-1233a Exterior view of the Balch House, Beverly, Massachusetts, H-1233b Exterior view of the Balch House, Beverly, Massachusetts, H-1233c Exterior view of unidentified house, Beverly, Massachusetts, H-1234 Exterior view of unidentified house, Beverly, Massachusetts, H-1235 Quincy Shaw McKean House, Beverly, Massachusetts, H-1236 Exterior view of the Samuel Manning House, Billerica, Massachusetts, H-1241a Exterior view of the Samuel Manning House, Billerica, Massachusetts, H-1241b Exterior view of the Samuel Manning House, Billerica, Massachusetts, H-1241c Exterior view of the Samuel Manning House, Billerica, Massachusetts, H-1241d Lock of the Middlesex Canal at Talbot Mills, North Billerica, Billerica, Massachusetts, H-1242 Asa Perley House, Boxford, Massachusetts, H-1246a Co. John Pearl House, Boxford, Massachusetts, H-1247b Peabody house, Boxford, Massachusetts, H-1248a Peabody house, Boxford, Massachusetts, H-1248b Jones-Keyes House, Monument Street, Concord, Massachusetts, H-1394d Jones-Keyes House, Monument Street, Concord, Massachusetts, H-1394e Jones-Keyes House, Monument Street, Concord, Massachusetts, H-1394f Nathan Meriam House, Meriam's Corner, Concord, Massachusetts, H-1395a Nathan Meriam House, Meriam's Corner, Concord, Massachusetts, H-1395b Nathan Meriam House, Meriam's Corner, Concord, Massachusetts, H-1396a Nathan Meriam House, Meriam's Corner, Concord, Massachusetts, H-01396a Nathan Meriam House, Meriam's Corner, Concord, Massachusetts, H-1396b Nathan Meriam House, Meriam's Corner, Concord, Massachusetts, H-1396d The Minot House, Concord, Massachusetts, H-1397a The Minot House, Concord, Massachusetts, H-1397b The Minot House, Concord, Massachusetts, H-1397c First Parish in Concord, Concord, Massachusetts, H-1398a First Parish in Concord, Concord, Massachusetts, H-1398b First Parish in Concord, Concord, Massachusetts, H-1398c Louisa May Alcott's Orchard House, Concord, Massachusetts, H-1399a Louisa May Alcott's Orchard House, Concord, Massachusetts, H-1399b Louisa May Alcott's Orchard House, Concord, Massachusetts, H-1399c Louisa May Alcott's Orchard House, Concord, Massachusetts, H-1399d Louisa May Alcott's Orchard House and the Concord School of Philosophy, Concord, Massachusetts, H-1400a Louisa May Alcott's Orchard House and the Concord School of Philosophy, Concord, Massachusetts, H-1400b The Concord School of Philosophy, Concord, Massachusetts, H-1401a The Concord School of Philosophy, Concord, Massachusetts, H-1401b ThoreauâAlcott House, 255 Main Street, Concord, Massachusetts, H-1402 Thoreau House, Concord, Massachusetts, H-1402a Henry David Thoreau Birthplace, 341 Virginia Road, Concord, Massachusetts, H-1403 Thoreau Cabin Site, Concord, Massachusetts, H-1404 Thoreau's cairn, Concord, Massachusetts, H-1405a Pellet-Barrett House, 5 Lexington Road, Concord, Massachusetts, H-1407a