Nonlinear imaging, in which object acoustic illumination is at a frequency &ohgr; and the output is detected at 2&ohgr;, has been complicated by competing nonlinear generation from the propagation medium between the object and the output lens. However, recent results with a nonspecular oblique incidence acoustic reflection microscope show interesting object nonlinear generation from polyvinylidine fluoride (PVF)2and mica in granite. These micrographs will be presented and discussed.