My team and I have written extensively in terms of how Ahmadis regarded Qadian as a holy place and even sometimes more sacred then Mecca.  I have found an interesting reference that was reproduced by Mufti Muhammad Sadiq in the very first issue of the Moslem Sunrise.  The writer of the original essay in the Review of Religions is P.B., its the ROR issue of March 21st, 1921, it seems that Mufti Muhammad Sadiq reproduced this essay in an attempt to explain the importance of Qadian in Ahmadiyya ideology.

The quote
“”What Jerusalem is to Christians, or Benares is to Hindus, that or more is Qadian to Ahmadis”””
See, Moslem Sunrise, Oct-1921, page 32

The scan