Barbed wire, still an essential tool in the livestock industry, is today a popular collector's item.
At three points in US history, six presidents (current or former) were alive at the same time. These points were: From March, 1861-January, 1862: Presidents Van Buren, Tyler, Fillmore, Pierce, Buchanan, and Lincoln were alive. January 1993-April 1994: Presidents Nixon, Ford, Carter, Reagan, Bush (the first) and Clinton were all around. January, 2001-June, 2004: Still living were Presidents Ford, Carter, Reagan, Bush (the first), Clinton, and Bush (the second). When either Trump or Clinton take office in January, 2017, he or she will join Carter, Bush I, Clinton, Bush II, and Obama as living presidents, making it a fourth time in history six presidents were alive.
Eisenhower was the last president born in the 19th century, and at age 62, was the oldest man elected President since James Buchanan in 1856 (President Truman stood at 64 in 1948 as the incumbent president, having succeeded to the Presidency in 1945 upon the death of Franklin Roosevelt).