His Messengers Went Forth 

 - Freeport, New York  Books for Libraries Press  1971  Ⓒ1948 
 - 64 pages illustrations 23 cm. 
<br/><br/><label>ISBN: </label>0-8369-8056-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Progressive Revelation--Doctrines--Baha'i Faith<br/>Interfaith--Baha'i Faith