In a world in which technology increasingly records our thoughts and records, the Jack Mason Museum is offering a glimpse into the printed past. “Hidden Histories—Diaries, Daybooks, and Ledgers of the Shafter Era (1860s to 1930s)” is on display through July, with a unique perspective on West Marin’s past as recorded in the beautiful handwriting and decorative marbled papers of yesteryear. Carola DeRooy, a member of the museum committee and the archivist for the Point…