Abslraet. High temporal resolution measurements of solar wind electrons at the Earth's bow shock on the dawn side have been made with the LASL/MPI fast plasma experiments on ISEE-1 and 2. One dimensional, l-d, temperatures, T~, and densities, N~, are obtained every 0.3 s and 2-d values are obtained every 3 s. Profiles of T~ and N~ at the shock usually are found to be similar to one another and also to the profile of the magnetic field magnitude. The time scale of electron thermalization varies from about 0.5s to greater than l min, depending importantly on the shock motion and the orientation of the magnetic field. Typical thermalization times from 05:00-12:00LT are --10s, considerably shorter than proton thermalization times at the shock. This time scale corresponds to a distance of --100 kin, comparable to but somewhat larger than the typical ion inertial length. The electron thermalization times are significantly longer than some of the values frequently cited in the past. At the end of the electron thermalization there typically is an overshoot in electron thermal pressure followed by an undershoot which give the pressure profile of the shock the appearance of a damped wave. Ion thermalization is essentially completed by the time the electron pressure wave is 'damped'. The most probable value of the electron temperature ratio across the shock is 1.7, and this value is relatively independent of the Sun-Earth-satellite angle, 0ss , for 0ss between 25 ~ and 100 ~ * By acceptance of this article, the publisher recognizes that the U.S. Government retains a non-exclusive, royalty-free license to publish or reproduce the published form of this contribution, or to allow others to do so, for U.S. Government purposes.