Letter. Director of the Institute for the Study of Contemporary Social Problems. ~ Letter from Hubert Locke to Gordon Zahn ~ Locke is delighted to know Zahn is considering attending the Symposium and informs him that a formal paper from Scholar-Respondants is not required. Locke gives the format of the Symposium and offers a very modest travel subvention if Zahn makes a presentation outside the framework of the Symposium.