Photo of Shigetaka Sasaki's judo black belt with the Kodokan logo and name in Japanese kanji characters
Nikkei National Museum
Attribution
<a rel="nofollow" class="external free" href="https://nikkeimuseum.org/www/item_detail.php?art_id=A12418">https://nikkeimuseum.org/www/item_detail.php?art_id=A12418</a>