"blunder of" is correct and usable in written English.
You can use it when you want to express an error or mistake. For example, "It was a blunder of judgment on my part to let him take the wrong path."
But Mr. Brewer made the blunder of calling Baltimore Boston.
That, Taylor ruled, was a "blunder of the first magnitude".
Might this not have been the boldest and most costly blunder of all?
The episode was the first real blunder of his four-month-old campaign.
He will be caught only through some blunder of his own, not through police investigation.
He came to regard the sedition act as the biggest political blunder of his life.
Unfortunately, forcing such a currency realignment would be a blunder of historic proportions.
This was perhaps the greatest rhetorical blunder of his Presidency, and it dogs him still.
"That was the biggest blunder of the impeachment trial," Mr. Casiple said.
This is the time to acknowledge a blunder of my own.
The Supreme Court fight was the worst blunder of his peacetime presidency.
