The battle for the Democratic nomination between Hillary Clinton and Barack Obama has featured two candidates trying to distinguish themselves while defending their past associations.

Obama was criticized in April by Clinton for interacting with two former student radicals, William Ayers and Bernardine Dohrn, members of Students for a Democratic Society who went on to found the bomb-making Weather Underground, which aimed to stop the Vietnam War. They are now Democratic activists.

It turns out that Clinton has her own connection to a former student radical, a one-time friend of Ayres and Dohrn, The Post's James V. Grimaldi reported.

The Post article examined Clinton's associations during her time as a student leader at Wellesley from 1965 to 1969, including her connections to Carl Oglesby, then the president of the leftist Students for a Democratic Society.

Oglesby, who came to Wellesley to speak during her time there, said his relationship with Clinton was "more of a passing acquaintance." Last week, Clinton's campaign suggested that she did not meet Oglesby until the 1990s, long after his activist years.

A photo has since surfaced showing Clinton and Oglesby together in Massachusetts in November 1994. An inscription on the photo reads: "To Carl Oglesby with appreciation and best wishes -- Hillary Rodham Clinton".

The photo, which was obtained from the W.E.B. Du Bois Library at the University of Massachusetts after the Post story ran, shows Oglesby and the former first lady while she was campaigning for candidates in the mid-term elections.