"Gogreen at your library," the Central Library's Summer Reading Club, wraps up tonight at 6:00 p.m. with a cooking demonstration by mother and son team Ellen and Walter Jacobs. Ellen and Walt will offer different suggestions for foods families can make together. Ingredients will include some veggies harvested from Ellen and Walt’s community garden plot and some purchased at the Davis Square Farmers’ Market. Recipes will be provided, and photos of the garden will be displayed. And after the show, our great summer readers will get their award certificates! We hope you can come! "Gogreen at your library," the statewide summer reading adventure, has been sponsored by the Massachusetts Regional Library System, the Boston Bruins, the Massachusetts Board of Library Commissioners, and the Friends of the Somerville Public Library.