I do not wish to detract in any way from this outstanding article, but I must question your statement in the lead to the letter found on page 101: “This one carries a date that almost certainly is the day the event that haunts the writer took place.”

The letter’s date of 17 September 1973 is approximately eight months after the Vietnam War cease-fire.

Of course, it’s not clear that the writer of this letter was writing about actions in Vietnam; perhaps this was in Laos or Cambodia. Another possibility is that the letter could be misdated and it was actually written in 1993, since the writer states in the first paragraph that he is saying things that should have been said twenty years ago.