{| cellpadding="1" style="float: right; border: 1px solid #8888aa; background: #f7f8ff; padding: 5px; font-size: 85%; margin: 0 15px 0 15px; text-align: center;"| ! style="background: #ccf; text-align: center;" | '''This article is part of the'''<br/>'''[[Venona project|Venona]]'''<br/>'''series.'''
|-
| style="text-align: center;"|[[CPUSA#Secret_apparatus|Secret apparatus]]
|-
| style="text-align: center;"|[[Office of War Information]]
|-
| style="text-align: center;"|[[Office of Strategic Services]]
|-
| style="text-align: center;"|[[U. S. Department of State]]|-|style="border-bottom: 1px solid #ccc"||-| style="text-align: center;"|<small>[http://en.wikipedia.org/w/wiki.phtml?title=Template:Ushistory&action=edit Edit this box]</small>
|}
'''Helen Barrett Tenney''' worked for the [[Comintern]] apparatus in the 1930s and funneled information to the Soviet Union on behalf of the Spanish Communists where she learned espionage tradecraft.