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A detailed map of Orange County before massive development. The northwest corner of the colored border section states, "Boundary line of the Irvine Subdivision." The colored bordered section comprises the Irvine Ranch. Prime meridian: GM. Relief: hachures. Graphic Scale: Feet. Projection: Cylindrical. Printing Process: Lithography. Verso Text: MS note: 435187.
1 map ; hand col. ; 52 x 54 cm., sheet 56 x 57 cm.