Wonder what the "mailbag" section on 60 Minutes II will look like this week.

The Washington Post lays out as succinctly as anywhere I've seen how we know documents presented by CBS last week were forged.

Expert Cited by CBS Says He Didn't Authenticate Papers

A detailed examination of the CBS documents beside authenticated Killian memos and other documents generated by Bush's 147th Fighter Interceptor Group suggests at least three areas of difference that are difficult to reconcile:

• Word-processing techniques. Of more than 100 records made available by the 147th Group and the Texas Air National Guard, none used the proportional spacing techniques characteristic of the CBS documents. Nor did they use a superscripted "th" in expressions such as "147th Group" and or "111th Fighter Intercept Squadron."

In a CBS News broadcast Friday night rebutting allegations that the documents had been forged, Rather displayed an authenticated Bush document from 1968 that included a small "th" next to the numbers "111" as proof that Guard typewriters were capable of producing superscripts. In fact, say Newcomer and other experts, the document aired by CBS News does not contain a superscript, because the top of the "th" character is at the same level as the rest of the type. Superscripts rise above the level of the type.

• Factual problems. A CBS document purportedly from Killian ordering Bush to report for his annual physical, dated May 4, 1972, gives Bush's address as "5000 Longmont #8, Houston." This address was used for many years by Bush's father, George H.W. Bush. National Guard documents suggest that the younger Bush stopped using that address in 1970 when he moved into an apartment, and did not use it again until late 1973 or 1974, when he moved to Cambridge, Mass., to attend Harvard Business School.

One CBS memo cites pressure allegedly being put on Killian by "Staudt," a reference to Col. Walter B. "Buck" Staudt, one of Bush's early commanders. But the memo is dated Aug. 18, 1973, nearly a year and a half after Staudt retired from the Guard. Questioned about the discrepancy over the weekend, CBS officials said that Staudt was a "mythic figure" in the Guard who exercised influence from behind the scenes even after his retirement.

• Stylistic differences. To outsiders, how an officer wrote his name and rank or referred to his military unit may seem arcane and unimportant. Within the military, however, such details are regulated by rules and tradition, and can be of great significance. The CBS memos contain several stylistic examples at odds with standard Guard procedures, as reflected in authenticated documents.

The "mainstream media" may be liberal, but nothing sets off media companies of any stripe like a chance to devour the competition.