Proposed Extensions to the White House (Executive Mansion) by Robert Owen, 1891-1901. This was one of several proposals in the late 19th century for expanding or relocating the Executive Mansion to provide more space for a growing government. Owen proposed creating two approximate replicas of the original building, rotated 90 degrees in plan and placed to either side, forming an open court with a greenhouse at the south end. Library of Congress, Prints & Photographs Division, LC-USZC4-7736.