The summer of 2013 marks the 65th birthday of Professor M. Ali Khan. It also marks forty years since the beginning of his career at Johns Hopkins, during which he has already produced more than forty graduate students and made many significant contributions to the economics department, to the University, and to the profession at large. To celebrate this occasion, a conference in honor of M. Ali Khan on “Mathematical Economics – Theory and Language” will be held on the Johns Hopkins Homewood campus in Baltimore, May 3-4, 2013. The program and other details are now available on the conference website. Further updates will be posted there. Registration is by invitation only (questions about registration should be directed to the individuals listed under Contact Information on the conference website).