After so many years I have found my paternal grandparents listed on the 1920 Boston Ma census. They are CLYDE GEORGE HOLMES b. 1889 VT stage electrician. 31 years of age. ELSA LAVONNE WILLIAMS HOLMES b, Nov. 1896 IL actress. 24 years of age. Where might I find possible information of the theaters, vaudeville, etc in the Boston area in the 1920's. Any thing on line or accessible by writing? Thanks Arlene