Blue line map. 125x130 cm (49½x51¼"), backed with linen.
Cadastral map showing roads, railroad, mines, brush, crops, springs, lots with dimensions, land ownership, etc. The map is from a survey done in 1893, this is a reprint with additions and corrections. With inset map: Ione City and vicinity. OCLC/WorldCat lists only one copy, at the California Historical Society.
Rancho Arroyo Seco was a 1840, 49,000 acres Mexican land grant. In 1840, the future Ione town site became part of the Rancho Arroyo Seco in Alta California. Ione is the historical home of the Sierra Miwok people. Unlike other communities in Amador County, which were founded on gold mining, Ione was settled in 1849 as a supply center, stage and rail stop, and agricultural hub. Coal mining in the Ione area began in the 1860s and lasted till the 1920s. In 2006, two California developers purchased more than 16,000 acres in western Amador County outside Ione for a reported $90 million, that was part of the Rancho Arroyo Seco. The land previously owned by San Francisco auto dealer Charles Howard, of Seabiscuit fame, was renamed Howard ranch when he bought it.