Scale ca. 1:3,500,000. "59741 8-68." Available also through the Library of Congress Web site as a raster image. AACR2
"787690133." Available also through the Library of Congress Web site as a raster image.
Scale ca. 1:3,800,000. Relief shown by shading. "Base map 77970." Available also through the Library of Congress Web site as a raster image. AACR2
Scale ca. 1:3,750,000. "500860 1-72." Shows military regions. Available also through the Library of Congress Web site as a raster image. AACR2
"Research completed December 1987." Includes bibliographical references (p. 321-339) and index. Also available in digital form.