Her Eternal Crown: Queen Marie of Romania and the Baha’i Faith, Della L Marcus, pp205-6
Shoghi Effendi was delighted to receive your letter of June 15th, 1933 together with the enclosed message addressed to him by Princesses Elizabeth and Marina of Greece and Prince Paul of Yugoslavia.
He was particularly glad to witness how effectively God is guiding your steps and is assisting you with His blessings all through your significant and wellnigh unique contacts with important Court personages and he feels confident that through your zeal, devotion and perseverance some of them will be increasingly confirmed in the Cause. The long and most interesting conversation you have had with their Royal Highnesses at the Royal Palace in Belgrade was fully indicative of their profound interest in the Teachings. They have most probably read the Queen’s eloquent and touching appreciation published in Volume IV of ‘The Bahà’i World’ and must have been inspired by it. It is hoped that their interest will be increasingly deepened and that it will lead them to pay a similar tribute to the beauty, power and uniqueness of the Bahà’i Revelation. You will find enclosed a letter addressed to them by Shoghi Effendi and written in his own handwriting. May Bahá’u’lláh open still further their eyes that they may fully realize the Divine Bounties bequeathed by Him to the world . . .
I am enclosing a letter to the Princesses which I trust you will find proper and suitable. After reading it you will kindly forward it to their address.
1933-07-10 to Martha re Marie & Princesses