Lincoln replies to letter from James Berdan in which plan to unite Fremont and Fillmore vote against Buchanan is outlined. "A union of our strength, to be effected in some way, is indispensable to our carrying the State against Buchanan." After suggesting alternative plan, Lincoln promises to confer with party friends in Chicago when he goes there on 15th. Abraham Lincoln to James Berdan, 10 July 1856, CW, 2:347-48.