Stanford University hosted the XIX International Symposium on Lepton and Photon Interactions at High Energies on August 9 – 14, 1999, at the Law School on the Stanford University Campus, the site of the previous Symposia. This volume constitutes the proceedings of the Symposium.

Stanford University hosted the XIX International Symposium on Lepton and Photon Interactions at High Energies on August 9 – 14, 1999, at the Law School on the Stanford University Campus, the site of the previous Symposia. This volume constitutes the proceedings of the Symposium.