Three portfolios and loose items documenting Brinckerhoff's work as a landscape architect. The items include mostly photographs, but also development plan drawings for projects. The photographs show the completed work including gardens, trees, fountains, water features, waterfalls, sculpture, as well as the exteriors of the buildings on the properties.The portfolios are numbered. Number III contains items pertaining to the estates of S. Wilbur Corman, Bronxville, New York; Lewis Bowman architect; Richard Hellman, Scarsdale, New York, Lewis Bowman architect; Arthur W. Lawrence, Bronxville, New York; Edgar V. O'Daniel, Bronxville, New York; Peter J. Murphy; John Hay Whitney, Manhasset, New York; F. N. Belding, Groton, Connecticut, Julius Gregory architect; Robert S. Byfield, Scarsdale, New York; Mrs. E. W. Sparrow, Locust Valley, New York; Ralph Elsman, Great Neck, New York; John M. Wheeler, Fieldston, New York; Mrs. Payne Whitney, Saratoga Springs, New York. Number IV contains items pertaining to Saratoga Springs Athletic Group, Hall of Springs, Reservation, Plan of Development for New Saratoga Springs, New York, Joseph H. Freedlander architect; Hudson House Inc. apartment building, Ardsley-on-Hudson, New York, Shreve, Lamb and Harmon architects; Landfall the estate of Robert C. Roebling, Princeton, New Jersey, Lewis Bowman architect; Reformed Church, Bronxville, New York; Estate of Anton G. Hardy, Englewood, New Jersey. Number V contains items pertaining to the states of Spencer G. Nauman, Bowmansdale, Cumberland Valley, Pennsylvania, Bottomley, Wagner and White architects; Richard D. Brixey, Bedford Hills, New York; Robert T. Swaine; Carnegie Institute of Technology (Carnegie Mellon), Pittsburgh, Pennsylvania. Loose pages contain items pertaining to estates of M. J. Carney, New Rochelle, New York; Quarry House, I. Kent Fulton, Uncas Point, Sachem's Head, Connecticut; Victor Emmanuel, Manhasset, New York; K. W. Shuttleworth, Amsterdam, New York; Ben Robyn Farm, Francis L. Robbins, Woodbury, New York; Francis L. Wurzburg, Bronxville, Howard C. Phipps, Westbury, New York; New York; New York World's Fair, 1939; Bronxville School; Castle Harbour Hotel, Tuckerstown Bermuda, Mayers, Murray and Phillip, and Yates, Cook and Darbyshire architects; American Pharmaceutical Association, Washington, D.C., John Russell Pope, architect. Also a folder of biographical information.