Summer Harvest: The Long Beach Island Foundation of the Arts and Sciences in Loveladies holds its annual “Plein Air/Plein Air Plus” exhibit with a reception and Juror Awards Ceremony on Sunday, Sept. 26, from noon to 3 p.m. At 1 p.m., juror Kathleen Foster, senior curator of American art and director of the Center for American Art at the Philadelphia Museum of Art, will announce the Plein Air prize winners and discuss the most recent renovations made to the Philadelphia Museum of Art.