The answer to your question is electricity.
Perhaps, being the president that had electricity wired into the White House.
Benjamin Harrison's wife was Caroline Lavinia Scott Harrison. They had three children: Russell Benjamin Harrison, Mary Scott Harrison, and Elizabeth Harrison. Caroline was active in various social causes during her husband's presidency, and the family played a significant role in the White House during that time.
November 1998
Benjamin Cleaves House was created in 1828.
Benjamin Hait House was created in 1735.
Benjamin Lundy House was created in 1820.
Benjamin Stephenson House was created in 1820.
Benjamin Bowen House was created in 1812.
Benjamin Cole House was created in 1701.
Benjamin Franklin House was created in 1730.
Benjamin Clark House was created in 1769.
Benjamin Flagg House was created in 1717.