Marking the largest charitable gift in its 33-year history, the Bolinas Museum has received a $140,000 donation from former board member and art enthusiast Mary “Mimi” Griffin-Jones, who died last year. The funds will go toward the museum’s endowment and will help implement key infrastructure improvements, such as climate control and fire suppression, that will safeguard the museum’s 3,000 objects and art pieces. “For a small institution like us, it makes a big difference,” said…