The premise that, once you give up on finding the actual text reference of a primary source for a course submission, use a secondary source, and submit the course for review, the next morning you will accidentally run across someone else who cites the primary source(s).

Of course, I don’t own either book that’s cited, and they may be quoting primary sources in secondary sources again, but they sure do look like better references than the ones I used.

Grumble.