This is the 1923 Cornell University yearbook photo of Uncle (Grand uncle, or Great Grand Uncle) #4:
https://commons.wikimedia.org/wiki/File:Liao_Chong_Zhen_at_Cornell,...
This photo was published in 1936 in The Bahá'í World 1932 1934 Vol V (p.46):
https://en.wikipedia.org/wiki/File:Liao_Chongzhen.jpg#/media/File:L...
This is a link to a scan of a 1980 reprint of the book the photo comes from: http://bahai-library.com/pdf/bw/bahai_world_volume_5.pdf].
