Found this at an estate sale. AI says this record is most likely a one of a kind rare historical document capturing in real time in person or broadcast of Truman's speech.
Key Details about the event:

President Harry S. Truman's address at the United States Military Academy at West Point

Date: May 20, 1952

Occasion: The 150th Anniversary of the academy's founding in 1802

Audience: Military academy cadets, faculty, alumni, and dignitaries.

Note: you are buying this AS/IS UNTESTED as I do not own a record player to test it.