1930 “HISTORIC MAP” BEGINNING OF MT. DIABLO SCENIC BLVD By bikedanville | February 19, 2021 SEE COMPLETE MAP: AGREEMENT SIGNED BY MT. DIABLO COMPANY, LTD AND STATE OF CALIFORNIA, “1ST DAY OF NOVEMBER, A.D. 1930.” Posted in History Danger Zone, Maps and tagged history, maps, state parks ← 2020 MONTHLY VISITOR ATTENDANCE1979 REALIGNMENT MAP → About bikedanville View all posts by bikedanville →