Rudolph Carl Lambert was an American citizen and head of the California Communist Party Labor Commission and also headed of its security section in the 1940s. Lambert first fell under FBI scrutiny in connection with its Comintern Apparatus investigation. Lambert is named in a 1945 San Francisco KGB cable intercepted and deciphered by the Venona project discussing information about uranium deposits in Western states. Wikipedia
The definitive Wikipedia entry for Rudy Lambert. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Rudy_Lambert