‘Abdu’l-Baha’s Affection and Love for Mason Remey:

. . ."Praise be unto God, that the model of the Mashrekol-Askar [current transliteration: Mashriqu'l-Adhkár] made by Mr. [Louis J.] Bourgeois was approved by his honor, Mr. Remey, and selected by the Convention. His honor, Mr. Remey is, verily, of perfect sincerity. He is like unto transparent water, filtered, lucid and without any impurity. He worked earnestly for several years, but he did not have any personal motive. He has not attachment to anything except to the Cause of God. This is the spirit of the firm and this is the characteristic of the sincere."
(Star of the West, Volume 11, No. 9, 20 August 1920 p. 139):
Mason Remey’s attachment to the Cause was well known at the time.  He travelled extensively to promote the Baha’i Faith during the ministry of ‘Abdu’l-Baha.  Shoghi Effendi in “God Passes By” (1950 edition p261) recorded that Mason Remey and his Baha’i companion, Howard Struven, were the first Baha’is to circle the globe teaching the Faith. Mason Remey visited ‘Abdu’l-Baha in the Holy Land several times and received numerous Tablets from The Master. “Star of the West”, a Baha’i periodical, published many of these letters during the years 1913-1922.   ‘Abdu’l-Baha’s high regard for Remey is evident in these letters.  Samples of ‘Abdu’l-Baha’s greetings and words to him illustrate this affection.
"O thou illumined youth and my spiritual beloved!” (SOTW, April, 1913)
"O my dear son!  Numerous letters have been received from you and their contents have all been conducive to happiness. Praise be to God, thou art confirmed in service to the Kingdom, art promulgating divine teachings, art raising the call of the oneness of mankind, art detaching the souls from ignorant racial prejudices, art summoning them to the investigation of truth, art showing forth unto them the light of guidance and art offering them the chalice of the wine of the love of God. This blessed purpose of thine is the magnet of the confirmations of the Abha Kingdom."   (July 1919 – translation by Shoghi Effendi)
"O thou enlightened beloved son!"  (November 1920)
"O thou herald of the Covenant! Thy letters have been received and an answer has been written. Verily thou art firm in the Covenant, art self-sacrificing, art the son of the Kingdom and dost deserve the confirmations of His Holiness Baha’u’llah." (December 1920 – translation by Shoghi Effendi)