Marjorie Trumbull, 82, known for her celebrity radio interviews from the top of San Francisco’s Mark Hopkins Hotel. Mrs. Trumbull, a pioneering interviewer in the electronic media, earned fame in the 1940s for her interviews on KSFO. She later appeared on television station KRON’s “Exclusively Yours” and was a bimonthly regular on the NBC “Home” show. Over 20 years, she once estimated, she interviewed 35,000 people including then-Vice President Richard M. Nixon, Frank Sinatra, Douglas Fairbanks Jr., Louis Armstrong and Ella Fitzgerald. A native of Alameda, Mrs. Trumbull also wrote about fashion, society and other subjects for the San Francisco Chronicle. On Saturday in La Jolla of emphysema.