File:Serge Nilus 2 Wrk.jpg

Summary
Photograph of Sergei Nilus, uploaded by User:Ludvikus in 2006. See for comparison File:Sergius A. Nilus - The Protocols of Zion (page 4 crop).jpg, a photograph of Nilus published in a 1934 translation of the Protocols.

This image is a cropped version of a photograph shown on the cover of the edition of Nilus' collected works, published in 2005ff. The origin of the image is unknown, but its appearance on these covers appears to substantiate that the picture is indeed of Nilus.

Nilus died in 1929, so if Nilus is shown in this photograph, we know it was taken before 1930. Beyond that, we do not know who owned the copyright to it, or when it was first published.