J. A. Robertson: Hay Barn, Planting Fields Arboretum, Oyster Bay, New York
J. A. Robertson: Orchid, Planting Fields Arboretum, Oyster Bay, New York
J. A. Robertson: Orchids, Planting Fields Arboretum, Oyster Bay, New York
J. A. Robertson: First Presbyterian Church (1873), Oyster Bay, New York
J. A. Robertson: Cold Spring Harbor, New York
J. A. Robertson: Nantucket Lightship LV-112 (1935), Oyster Bay, New York
J. A. Robertson: Sagamore Hill National Historic Site (1884), Oyster Bay, New York
J. A. Robertson: Bailey Arboretum, Lattingtown, New York,
J. A. Robertson: Bailey Arboretum, Lattingtown, New York,
J. A. Robertson: Bailey Arboretum, Lattingtown, New York,
J. A. Robertson: Bailey Arboretum, Lattingtown, New York,
J. A. Robertson: Very Late Rose, Bailey Arboretum, Lattingtown, New York,
J. A. Robertson: Bailey Arboretum, Lattingtown, New York,
J. A. Robertson: Bailey Arboretum, Lattingtown, New York,
J. A. Robertson: Nassau County Museum of Art, Roslyn Harbor, New York
J. A. Robertson: Milliken-Bevin Trellis, Grounds of the Nassau County Museum of Art, Roslyn Harbor, New York
J. A. Robertson: Grounds of the Nassau County Museum of Art, Roslyn Harbor, New York
J. A. Robertson: Grounds of the Nassau County Museum of Art, Roslyn Harbor, New York
J. A. Robertson: Grounds of the Nassau County Museum of Art, Roslyn Harbor, New York
J. A. Robertson: Grounds of the Nassau County Museum of Art, Roslyn Harbor, New York
J. A. Robertson: Autumn Color, Grounds of the Nassau County Museum of Art, Roslyn Harbor, New York
J. A. Robertson: Grounds of the Nassau County Museum of Art, Roslyn Harbor, New York
J. A. Robertson: Grounds of the Nassau County Museum of Art, Roslyn Harbor, New York
J. A. Robertson: Clark Botanic Gardens, Albertson, New York
J. A. Robertson: Clark Botanic Gardens, Albertson, New York
J. A. Robertson: Clark Botanic Gardens, Albertson, New York
J. A. Robertson: Gerry Park. Roslyn, New York
J. A. Robertson: Roslyn, New York
J. A. Robertson: Gerry Park. Roslyn, New York
J. A. Robertson: Gerry Park. Roslyn, New York