Rosana Margaret Kroh Blake, known as Margaret Blake Alverson, was a prominent singer, singing coach, and author based in San Francisco, California. Born in 1836, she cultivated a rich musical career that began in her childhood, where she performed piano for miner guests at her parents' home in Stockton. Alverson's influence extended beyond performance; she was a dedicated educator whose notable students included Lee Tung Foo and Pauline Joran. Her experiences during the Civil War, while living in Boston, further enriched her artistic perspective and contributions to the cultural landscape of her time. In 1913, Alverson published her autobiography, "Sixty Years of California Song," which offered a unique glimpse into the musical evolution of California and her personal journey within it. Her commitment to music and education was also evident in her philanthropic efforts, including her donation of music to the Oakland Free Library, which contained a collection of diaries, musical programs, letters, and photographs. Alverson's legacy as a pioneer in California's music scene and her role in shaping the next generation of musicians underscore her significance in American cultural history.