Sept. 29, 1961 - Casey Stengel, 71, agreed today to a one-year contract as manager of the New York Mets, the new National League club scheduled to begin its first season of play in 1962. The announcement was made by George M. Weiss, the president of the Mets and formerly the Yankees' general manager. Both he and Casey were retired by the Yanks at the end of last season to make room for younger men. Casey's first job with the Mets will be to meet with executives and scouts to evaluate the players that the eight established National League clubs will expose to a postseason draft. Another team scheduled to begin competition next season, the Houston Colts, also will participate in the draft.