Dining room, Lyman Estate, Waltham, Mass. Dining room, Lyman Estate, Waltham, Mass. Hallway, Lyman Estate, Waltham, Mass., facing central staircase and library entrance. Hall, Lyman Estate, Waltham, Mass. Bedroom, Lyman Estate, Waltham, Mass., facing fireplace. Bedroom with double bed, Lyman Estate, Waltham, Mass. Bedroom with twin beds, Lyman Estate, Waltham, Mass., facing fireplace. Parlor, Lyman Estate, Waltham, Mass., facing fireplace. Exterior view of the front of Langdon House, Portsmouth, N.H., as seen from across the street Oblique exterior view of the Lyman Estate, Waltham, Mass., facing porch. Parlor, Lyman Estate, Waltham, Mass. Second floor staircase landing, Lyman Estate, Waltham, Mass. Parlor, Lyman Estate, Waltham, Mass. Bedroom, Lyman Estate, Waltham, Mass. Bedroom, Lyman Estate, Waltham, Mass. Staircase, Lyman Estate, Waltham, Mass., as seen from landing and facing stair windows. Hallway, Lyman Estate, Waltham, Mass. Hallway, Lyman Estate, Waltham, Mass. Oblique exterior view of Langdon House, Portsmouth, N.H. Detail of plot plan or atlas page showing Langdon House footprint, Portsmouth, N.H. First floor plan showing alterations for Woodbury Langdon, Langdon House, Portsmouth, N.H. Second floor plan showing alterations for Woodbury Langdon, Langdon House, Portsmouth, N.H Elevation and floor plan for Langdon House, Portsmouth, N.H. Exterior view, Langdon House, Portsmouth, N.H. Front entrance with door closed, Langdon House, Portsmouth, N.H. Exterior view, Langdon House, Portsmouth, N.H., showing fenced-in front yard Exterior view, Landgdon House, as seen from closed front gate Portrait of John Langdon Exterior view of the Langdon House, Portsmouth, N.H., as seen from the street Entrance hall and stair, Langdon House, Portsmouth, N.H. Entrance hall and stair, Langdon House, Portsmouth, N.H. South parlor, Langdon House, Portsmouth, N.H. Parlor, Langdon House, Portsmouth, N.H. Parlor, Langdon House, Portsmouth, N.H. Photograph of a lithograph depicting fireplace carving, Langdon House, Portsmouth, N.H. Room with piano, Langdon House, Portsmouth, N.H. Fireplace, Langdon House, Portsmouth, N.H. Fireplace, South Parlor, Langdon House, Portsmouth, N.H. Parlor, Langdon House, Portsmouth, N.H. Exterior view of Langdon House, Portsmouth, N.H., showing outbuilding (garage? stable?) and people walking on the sidewalk. Informal group portrait of [left to right:] Fred P. Parson, Susie Simmonds (Page), Bimmy Simmonds, and unidentified with arms slung over fence. Stephen Perkins Parson holding bottles. Exterior view of the Lyman Estate "at early stage," Waltham, Mass. Three people are standing on the front steps. Architectural drawing for sections of hall, Lyman Estate, Waltham, Mass. Exterior view of Lyman Estate, Waltham, Mass. Interior view of Langdon House, Portsmouth, N.H. Exterior view of the front of Lyman Estate, Waltham, Mass., from across grounds and pond. Exterior view of Lyman Estate, Waltham, Mass., before 1886 renovation. Interior view of Lyman Estate ballroom, Waltham, Mass. Minot's Ledge Light House, Massachusetts Bay near Cohasset