The following is a description of Ulleungdo from a Japanese text entitled "日本民族の新發展 滿韓露領地誌." It was written by 岡部福藏 and published on August 11, 1905.
I cannot read the whole document, but I noticed that in the note section at the top of the second page the writer seems to have mentioned the fact that Takeshima (Liancourt Rocks) had been incorporated in February as part of the Oki Island district. I do not know who this writer was, but if he knew about the incorporation of Liancourt Rocks in August 1905, then maybe the incorporation was not as secret as Koreans would like people to believe.
Aside from the mention of Takeshima's incorporation, I do not know if there is anything particularly interesting about this document, but since I did not see it among the documents we have translated on this blog, I thought I would post it in case someone would like to translate it. (However, it seems like I have seen this somewhere before.)