Links
Here are a number of random links to information about the T981. Some may be out of date. If you find any not working, or if you know of any not listed here, I would be happy to be informed.
https://web.archive.org/web/20210908025930/http://www.yasuhara.co.jp/
http://web.archive.org/web/20031210215306/http://www.yasuhara.co.jp/jpn/products/camera/t981/top.h
https://www.collection-appareils.fr/x/html/camera-11744-Yasuhara_T981.html
https://web.archive.org/web/20061102004119/http://homepage3.nifty.com/madam/camera/YASUHARA.html
http://camera-wiki.org/wiki/Yasuhara_T981
https://www.cameraquest.com/yasu2.htm