![J.P. Morgan, Jr. Mansion, Glen Cove, New York. | Long island vacation, Long island mansion, American castles J.P. Morgan, Jr. Mansion, Glen Cove, New York. | Long island vacation, Long island mansion, American castles](https://i.pinimg.com/originals/ec/7d/ad/ec7dad06cd72b362ad7c8d15ae81607e.jpg)
J.P. Morgan, Jr. Mansion, Glen Cove, New York. | Long island vacation, Long island mansion, American castles
![J.P. Morgan, Jr. Mansion, Glen Cove, New York. Before demolition - killed me to miss this auction - just to see inside, had … | Mansions, Glen cove, American houses J.P. Morgan, Jr. Mansion, Glen Cove, New York. Before demolition - killed me to miss this auction - just to see inside, had … | Mansions, Glen cove, American houses](https://i.pinimg.com/originals/55/da/2f/55da2f8f99c3341833fd23b012f08b2c.jpg)
J.P. Morgan, Jr. Mansion, Glen Cove, New York. Before demolition - killed me to miss this auction - just to see inside, had … | Mansions, Glen cove, American houses
![J. Pierpont Morgan, Jr.'s 'Matinecock Point' Estate on East Island, Glen Cove, NY] - Robert Yarnall Richie Photograph Collection - SMU Digital Collections J. Pierpont Morgan, Jr.'s 'Matinecock Point' Estate on East Island, Glen Cove, NY] - Robert Yarnall Richie Photograph Collection - SMU Digital Collections](https://digitalcollections.smu.edu/digital/api/singleitem/image/ryr/2644/default.jpg)