An original 1941 Japanese government folding map titled 大東亜共栄圏及び太平洋要図 — Daitōa Kyōeiken oyobi Taiheiyō Yōzu, approximately translating as a general map of the Greater East Asia Co-Prosperity Sphere and Pacific Ocean.

The map was edited by the Japanese Information Bureau (情報局 / Jōhō-kyoku) and printed and published by the Cabinet Printing Bureau (内閣印刷局) as a supplement to Shūhō No. 238. It dates to 30 April 1941, several months before Japan's entry into the Pacific War in December of that year.

Printed as a large folding sheet, the map itself states the Japanese national A1 standard size of 594 × 841 mm, or approximately 59.4 × 84.1 cm, with a scale of 1:26,000,000.

The map presents the Asia-Pacific region through contemporary Japanese government cartography, covering Japan, Korea, China, Manchuria, Southeast Asia, the Philippines, Dutch East Indies, Australia, Pacific islands, Hawaii and parts of western North America. Extensive Japanese place names appear throughout, with political and territorial information, routes and other geographical or strategic markings printed in black/grey-blue and red.

Japan and various areas associated with contemporary Japanese territories and interests are prominently indicated in red, while numerous lines extend across the Pacific. The sheet is historically significant as a government-produced geopolitical and propaganda document illustrating the official concept of the Greater East Asia Co-Prosperity Sphere shortly before the expansion of the Pacific War.

The upper margin carries the original Japanese title and 情報局 attribution, while the margins retain the printing and publication information, Shūhō supplement reference, A1 format notation and prohibition against unauthorised reproduction.

Condition is fragile, with significant splitting along the original folds and deterioration to the edges and fold intersections. Despite this, the map remains substantially complete in overall content, and the principal title, cartographic information and red printing remain clearly visible.

For protection, the map will remain in its existing folded configuration and will be carefully supported between rigid boards, protected against moisture and dispatched from Japan by tracked Japan Post EMS.