Going into its eighth year, the Portland Art and Heritage Fair is once again heralding the arts and culture of this little river neighborhood. The theme of the fair this year is “full circle.” In addition to their usual juried art show, the fair is promoting Ed White’s “River City Drumbeat” documentary and will be hosting an outdoor screening of the film. There will be the usual fête du jour events with booths, tours, art workshops, musical performances and more. There will also be a dedication of new stained glass by Bob Market at the museum. A major piece of the art fair will also be held this weekend — the Almost 5K run will have its third race.