Highlights;
♦ the Supreme Court:
◊ never read or heard the defendants’ views, because they were not represented in any form
◊ heard only one side of the matter, the government’s side
◊ did not accept most of the government’s arguments
◊ based its conclusion on a small part of the government’s argument
◊ declared that a short-barreled shotgun was not a "militia" or "military-type" firearm, at the time the Second Amendment was written (late 1700s)
The U.S. v Miller, revisited (JPFO, Jews for the Preservation of Firearms Ownership)
You might also want to take a look at this:
https://www.zeugmaweb.net/legal/miller.html
It covers most of the relevant documents to the case that still exist.