'She met her contact five days after the postmark date.

Wally looked at both sides of the card for another moment, imprinting hotel structure, postmark date, and handwriting indelibly on his memory.

Murphy soon noticed that the postmarked dates coincided with visits by John F. Kennedy to the communities and he then called the local police.

There is a complete collection of Greeting from Chicago postcards and large Letter postcards sorted by postmark date when possible.

The secretary has opened each of these envelopes, the contents taken out and unfolded then stapled together in the upper left-hand corner along with the envelope in case a postmark date is critical.

At this and subsequent meetings with the team, David provided letters written by his brother in their original envelopes, so the use of postmark dates enabled the enhancement of the timeline of Ted Kaczynski's activities being developed by the Task Force.