ART QUILT EXHIBITION   INSTRUCTORS OF QUILT NORTHWEST 99 WORKSHOPS Works by leading contemporary artists from across the US and Canada Exhibition of Instructors Quilts July 19-23 9AM to 5PM Renshaw Gallery on Linfield Campus, McMinnville OR Exhibition and Vendor Open to the Public   ERIKA CARTER Bellevue, WA SUSAN BRANDEIS (WILCHINS) Chicago, IL JUDITH DINGLE Toronto, Ontario, CAN THERESE MAY San Jose, CA VELDA E. NEWMAN Nevada City, CA     A SMALL QUILTS INVITATIONAL EXHIBITION IS BEING PLANNED