He was only one source. There were others under suspiscion,such as a E-4 clerk who worked in Saigon,and even people who worked on the Senate Foreign Relations committee and on Kissinger's "peace"(puke,gag) team in Paris. PLEASE note that Bubba-1 worked for the Senate Foreign Relations Committee as a summer intern before he went to England and Russia. Re-read his letters to ROTC Col Holmes,and note the part where he says "I was already oppossed to the war even before I worked for the Foreign Relations Committee,and my work there exposed me to secret information most Americans weren't aware of that......". Fullbright was the one who got Bubba-1 the job there (and his scholarship at Oxford),he was the Senator who was the chairman of the committee,and he was also the one whose office was suspected of leaking this information to the enemy.
BTW,for anybody interested about this subject,get the paperback book "Operation Brightlight",and read about Ambassador Sullivan in Laos denying the US military permission to go into Laos to rescue shot down pilots and POW's who were KNEW where they were. You can also read about the suspiscions about other traitors such as the Saigon clerk,and the efforts US forces made to rescue POW's and shot down pilots,DESPITE all the bureaucratic efforts made to stop them.
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About four yeas ago on another forum a guy who had been a nave enlisted man in a critical position in Washington bragged about sending copies of secret documents and photographs to the New York Times and otther places to aod in the so-called anti-war effort. It was everywhere.
And yes, I knew DIRTXPOTUS had been on Fulbright's staff.....and I thought at the time that Fulbright had to be one of those 40's socialists who was working for the Russians. I intensely disliked and distrusted him, he belonged in a special category that I suspected were either fellow-travelers or agents outright, either of influence or worse.
Let's get DIRTXPOTUS drunk and laid some time and then secretly load his drink with sodium pentothal. You do the interrogation, and I'll transcribe on a laptop and run the camcorder, and we'll find out just what the hell he was doing in Moscow. Deal? Plus, I don't think anyone ever discovered who placed the Soviet bug that fell out of a chair in a Senate committee room that time. We really ought to get Putin to dump the KGB's files on 1970's North American assets and clear all this up once and for all.