On June 21, at the San Diego County Fair, The Don Diego Fund Doobie Brothers Dinner and Concert Gala will support annual scholarships to outstanding, college-bound, San Diego County high school seniors and a program that introduces elementary students from low-income areas to farming and nutrition. Among the featured silent auction items are a large framed Phil Mickelson display containing an autographed 18th hole flag from the 2010 Masters and two photos, and a round of golf at the Rancho Santa Fe Golf Club. Guests will also enjoy hosted cocktails and a gourmet dinner in the Turf Club followed by VIP stage-front seating in the Grandstand for the concert. Individual tickets are $150. The Don Diego Fund is a nonprofit scholarship program of the San Diego County Fair. It was formed in 1986 as a lasting tribute to Tom Hernandez, who, in the role of Don Diego, served as the legendary goodwill ambassador of the fair from 1947 until his death in 1984. To date, the fund has awarded $536,000 in scholarships and grants, helping 126 students pursue higher education. (858/792-4210, www.dondiegofund.org)   JANE SHIOMI