Visits to Johns Hopkins University, Boston (Spring Joint Computer Conference, Extensible Languages Symposium, May), Poughkeepsie (IBM Large Systems Division) and Cambridge MA (Project MAC). Copies of UN General Assembly Resolution on international cooperation with a view to the use of computers and computation techniques for development, 1968, a presentation 'Straightening out programming languages', byR. W. Bemer, General Electric Company, May 1969, and synopses of Johns Hopkins' newly introduced Computer Science courses. Correspondence with Martin Greenberger, Johns Hopkins University; Robert H. Fano, MIT; Jim Greenwood, IBM; J. C. Licklider, MIT; Anthony G. Oettinger, Harvard; W. M. Waite, University of Colorado; Yaohan Chu, University of Maryland; S. Dorn, University of Denver.