Why did John Adams dissolve his friendship with Thomas Jefferson and why did they reconcile their friendship?

Question

Must provide the name of book, website and/or newspaper from where information was obtained

Answer 1

t was a contest of titans: John Adams and Thomas Jefferson, two heroes of the Revolutionary era, once intimate friends, now icy antagonists locked in a fierce battle for the future of the United States. The election of 1800 was a thunderous clash of a campaign that climaxed in a deadlock in the Electoral College and led to a crisis in which the young republic teetered on the edge of collapse.

In 1812, Adams reconciled with Jefferson. Their mutual friend Benjamin Rush, who had been corresponding with both, encouraged Adams to reach out to Jefferson. Adams sent a brief note to Jefferson, which resulted in a resumption of their friendship, and initiated a correspondence which lasted the rest of their lives.