Bruce, Hal. The gardens of Winterthur in all seasons. [electronic resource] / Photos. by Gottlieb and Hilda Hampfler. Foreword by Henry Francis du Pont. A history of the gardens by C. Gordon Tyrrell.. — New York : : Viking Press,, [1969, c1968]. — 196 p. : ill. (part col.), map. 29 cm. — (A Winterthur book). - Winterthur book. .
Second printing 1969.
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Henry Francis du Pont Winterthur Museum.
Henry Francis du Pont Winterthur Museum Gardens (Del.)