Does anyone know where I can get copyright information on this photo?
The best I can do is a couple links related the photo.
http://ww2db.com/image.php?image_id=10042
From this forum WW2 In Color:
http://www.ww2incolor.com/chinese-forces/d+6.html
A source I couldn’t fully download, due to dialup I assume:
美军在二战时候识别日本人的间谍小册子太欢乐了!有趣_网上谈兵_中华网 …
club.china.com › 中华网论坛 › 网上谈兵
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Sep 2, 2011 - 35 posts - 16 authors
470 × 623 - 二战期间，作为中国盟国的美国，派遣了大量的抗日援华的美国大兵。美国华盛顿专管陆军和海军的部门为了帮助这些士兵区分中国人和日本人专门 …
You can check those sources and keep watch here just in case.