Reel 86 consists entirely of correspondence between members of the Brandeis/Mack faction of American Zionism, concerning the newly formed Palestine Development Leagues. A major theme in these letters is the necessity to raise monies to fund projects such as hydroelectric development, housing, and creation of new industry. There is also consultation with European and Palestinian Zionists to implement these programs. Correspondents include Robert Szold, Jacob deHaas, Julian W. Mack, Felix Frankfurter, Julius Simon, and Henry Sachs. (Boxes Z/P 29-1b/1e, 30, 31-1a/1h)