A Search for the Sunyaev-Zel'Dovich Effect at Lambda=3 Millimeters

Using both drift scan and source tracking observations, we have searched for the Sunyaev-Zel'Dovich effect in seven clusters of galaxies at a wavelenght of 3 millimeters using the National Radio Astronomy Observatory 12 meter ( formerly 11 meters) telescope on Kitt Peak and the AT&T Bell Labotories 7 meter telescope at Crawford Hill.