The next three Fridays, the Walker Art Center in Minneapolis is screening 23 regionally-produced films and videos in the 1997 Film and Video Showcase. This year, there were double the number of submissions from the local filmmakers. One of those is Peter Syvertsen (SEE-vert-sen), who made a 17-minute film called "26 Summer Street", based on a William Carlos Williams short story. Peter Syvertsen (SEE-vert-sen)'s "26 Summer Street" shows May 16th, in the third and final Friday night of the Walker's 1997 Film and Video Showcase. The showcase of short movies actually begins tomorrow night, and includes Chuck Smith's "Once Again", Hayden Groom's "Family Tree", and Mary Ahmann's "The Last Goodbye". Sun 28-MAY 19:29:01 MPR NewsPro Archive - Wed 04/11/2001