Surveyed & drawn by E. O. C. Ord, Lt. U.S.A. & Wm. R. Hutton, asst. August 29th 1849. map 47 x 49 cm. Facsimile. Relief shown by hachures. Oriented with north toward the upper right. "Reproduced ... from a manuscript survey in the office of the Los Angeles City Clerk." Scale ca. 1:19,000 (not "10 in. to the mile").