THE PROMETHEAN, USA
'Symposium for Liberal Religious Youth - The Adolescent Mystique.' The archive at Harvard University seems to indicate THE PROMETHEAN ran from February 1964 thru January 1968.
Below: December 1965. See the .pdf here.
Thank you to Christian Fiot and Eric Galzi for this item.
ALBANIA (1) 
In ARABIC (3) 
BULGARIA (2) 
In CATALAN (3)
In CHINESE (12)
CROATIA (4) 
CZECH REPUBLIC (11)
DENMARK (12) 
In DUTCH (74)
In ENGLISH (778)the Australian E
:
FINLAND (15)
In FRENCH (123)
In GALICIAN (1)
In GERMAN (134)
GREECE (19)
HUNGARY (2)
ICELAND (9)
IRAN (1)
ISRAEL (9)
In ITALIAN (83)
JAPAN (63)
LITHUANIA (1)
NORWAY (45)
POLAND (14)
In PORTUGUESE (51)
ROMANIA (1)
RUSSIA (4)
In SERBIAN (5)
SLOVAKIA (1)
In SPANISH (185)
SWEDEN (28)
THAILAND (3)
TURKEY (17)