Presidents at 51 — PICTURES

Aug. 3, 2012, 2:59 a.m.

Barack Obama, one of our young­est pres­id­ents, will turn 51 on Au­gust 4. He’ll likely be spend­ing the birth­day week­end at Camp Dav­id, be­fore go­ing off to a birth­day-themed fun­draiser at home in Chica­go next week. But what were some of his pre­dece­sors do­ing when they were 51? And com­pared with the oth­ers, does Obama at 51 look more like, well, Obama at 60?

We col­lect pic­tures be­low.