Tuolumne County Museum and History Research Center By Sabrina Biehl Published Mar 31, 2014 03:02 pm Loading Map.... Tuolumne County Museum and History Research Center158 Bradford St. - SonoraEvents 37.98359 -120.38553230000002 Address 158 Bradford St. Sonora, Ca 95370 United States Upcoming Events Pebbles in a Pond's Grand Finale - 06/01/2024 - 10:00 am - 12:00 pm