Whilst recently cruising through the Internet I came across this question: Why do freemasons wear black and white clothing?
An answer was supplied by Bro Richard Num of Adelaide, Australia, on the Internet in 1999, in response to just such a question from a Prince Hall Brother.
The wearing of black and white has been the custom for over a hundred years.
In the 1700's freemasons were more colourful and did not wear black and white.
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2003 - WHY THE BLACK AND WHITE CLOTHING? - Bro Frank Bottrill.