Hamilton Jordan, the former White House chief of staff for President Jimmy Carter, was a well-known force in the health community. During the past 24 years he battled four different forms of cancer and urged cancer patients to empower themselves with information.

After bouts with non-Hodgkins lymphoma, prostate cancer and skin cancer, Mr. Jordan, 63, yesterday died as a result of mesothelioma, another form of cancer. Mr. Jordan often speculated that his lymphoma may ha