Before death, he wrote a first-class historical material of the end of Edo Period called 'Kyoto Shugoshoku Shimatsu', but actually he died while he was writing the draft, so according to a established theory, his younger brother, Kenjiro YAMAKAWA, completed the writing.
生前に幕末の一級史料である『京都守護職始末』を書いたが、浩自身は草稿の段階で没し、実際は弟の山川健次郎によって仕上げられたというのが定説となっている。