Professional Memberships Most Popular Nonprofit $30 for 1 year Newsletter SubscriptionWebsite Members-Only Access10% Off Archive SearchAcknowledgement Sign Up! Most Popular Business $50 for 1 year Newsletter SubscriptionWebsite Members-Only Access10% Off Archive SearchAcknowledgement Sign Up! The Lemon Grove Historical Society is a 501 (c)(3) nonprofit organization established in 1978, Federal ID #95-3401395. All monetary donations and donations of items are tax deductible as provided by law.