Armstrong Circle Theatre - 1950 Days of Confusion The Story of College Admissions 11-24 was released on:

USA: 13 September 1961

Armstrong Circle Theatre - 1950 Days of Confusion The Story of College Admissions 11-16 was released on:

USA: 24 May 1961

In computer technology, a circle with a line through it typically denotes a zero, as opposed to the letter 'O'. This is done to prevent confusion. Not sure if this is what you where looking for

Con is the prefix for the word confusion.

There is no TM for Confusion