Shm@l is correct in the version he quotes from the new book. What the austrailian jewish news recounts is as much revisionist history as the arabs claiming there never was a temple on har habayis. I personally have heard the story of the Rebbes meeting with general Eisenhower from my fathers friends- survivors, who were actually there. There also has been found old records of the Rebbe ztl activities in the dp camps and a picture was found of that very drasha where the rebbe put on a talis before speaking.
Regarding the Sanz newspaper, you will not find it online. it is mailed out to subscribers only. I will give you the magazines email and you can contact them directly for a copy of that article/issue and for any questions you may have. I’m sure they will be happy to answer them. though you might have to write in hebrew.