Hi Bill, Newspaper microfilms are in the Civic Center public library, 4th floor(east side of Hwy 101). While you are there, visit the CA Room in the library for lots more information. I am not aware of an historical society specifically for the Larkspur/Corte Madera area. The Marin County Genealogical Society's collection is located in the LDS church on San Pedro Road, not far from the Civic Center. The MCGS library is open Tues and Thurs in the evening 5-9, and on Wed. and Fri. in the mornings 9-1.