German and Chinese. "Aufnahme innerhalb der Stadtmauern 1900/1901 durch die Feldtopographen des Deutschen Ostasiatischen Expeditionskorps. [Aufnahme] ausserhalb [der Stadtmauern] 1902/1905 [durch die] Topographische Sektion der Ostasiatischen Besatzungs-Brigade." Available also through the Library of Congress Web site as a raster image.
"Stand: 1. 1943." Also shows numbered administrative wards (Bezirke). Unidentified grid. Former security restriction in upper margin: Nicht für die Öffentlichkeit bestimmt! Printed in western/eastern segments. Available also through the Library of Congress Web site as a raster image. Includes note. LC copy imperfect: Use-worn, fold-lined, rubber-stamped.
Cadastral map showing names of owners, businesses, "Chinese occupancy," "Chinese gambling houses," and "White occupants." "The map and colors show only the first, or street floor of Chinatown and the occupancy of same." LC copy annotated in pencil Available also through the Library of Congress Web site as a raster image. Includes note and list of names of Mayor and Supervisors.