First Lady face
- The biggest height difference between Presidents and their First Lady wives is 37cm (1-foot-3-inches), between the 3rd President Jefferson and Martha Skelton Jefferson
- The second place was tied at 36cm (1'2") between two President couples: the 1st President George Washington and wife Martha Washington, and the 16th President Abraham Lincoln and his wife Mary Lincoln.
- The smallest difference is -7cm (-3inches) between the 4th President James Madison (163cm, 5'4") and his wife Dolley Madison (170cm, 5'7").
11. (23 cm) & (unknown)
38. (5 cm) & (20 cm)