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When did the US Supreme Court drop the &#39;Mr&#39; before Justice?
<p>Old US Supreme Court opinions—<a href="https://supreme.justia.com/cases/federal/us/71/333/" rel="nofollow noreferrer">eg, here</a>—follow the English and (some) Commonwealth practice of prefacing the title of the justice with 'Mr.'.  When and why did this, and only this usage, cease (given that the US still uses, for example, the titles <em>Madam</em> Speaker and <em>Mr.</em> President)? Were there state supreme courts which retained the traditional styling for longer or abolished it earlier?</p>
<p>Was it with the appointment of Justice O'Connor, or was she ever, if even for a brief period, referred to as Madam or Ms. Justice O'Connor in the official reports?</p>

<p>According to the <a href="https://www.google.com/books/edition/Oxford_Companion_to_the_Supreme_Court_of/cY3er3ilgjcC?hl=en&amp;gbpv=1&amp;dq=supreme%20court%20justice%20titles%201980%20%22mr.%20justice%22%20o%27connor&amp;pg=PA1153&amp;printsec=frontcover&amp;bsq=%22mr.%20justice%22" rel="nofollow noreferrer"><em>Oxford Companion to the Supreme Court of the United States</em> (OUP, 1992), p. 1153</a>:</p>
<blockquote>
<p>The titles affixed to the names of the Justices have changed over time.  Traditionally a justice's title had been &quot;Mr. Justice&quot;, as in &quot;Mr. Justice Blackmun.&quot; In November 1980, however, the justices dropped the prefix and began signing their opinions simply &quot;Justice Blackmun&quot;.  When orally addressing a member of the Court, one refers to the justice as simply &quot;Justice Blackmun,&quot; but one still addresses the chief justice as Mr. Chief Justice.&quot;</p>
</blockquote>
<p>For reference, Justice O'Connor was appointed in 1981.</p>
