Using P wave first motions together with amplitude and phase data from long-period Love and Rayleigh waves, the focal mechanisms of 22 earthquakes occurring in eastern North America between 1962 and 1976 are determined. The techniques used yield good results for events with body wave magnitudes as small as 4.0. Eighteen of the events have depths between 5 and 16 km; 15 have significant components of strike slip motion; and for focal mechanisms having nearly horizontal pressure axes, 70% of the pressure axes trend northeast or east. Though the earthquake sample may be biased toward the central United States, it is significant that no focal depths greater than 25 km have been encountered. A confidence factor is assigned to each focal mechanism for use in future tectonic syntheses.