Following report of communist, letters must show these

Usage examples of postmarks.

He created investigative chaos with his baffling varieties of papers, pens, paints, postmarks, and disguised handwritings, and by his con­stant moving about without leaving a trail through diaries, calendars, or dates on most of his letters and work.

He created investigative chaos with his baffling varieties of papers, pens, paints, postmarks, and disguised handwritings, and by his constant moving about without leaving a trail through diaries, calendars, or dates on most of his letters and work.

There appears to be no record that the police thoroughly investigated the postmarks or locations of Ripper letters not mailed from the East End or thought twice about other letters that were allegedly written or mailed from other cities in Great Britain.

According to the postmarks, the alleged locations of the Ripper at various times, or where he claimed to be going, include Birmingham, Liverpool, Manchester, Leeds, Bradford, Dublin, Belfast, Limerick, Edinburgh, Plymouth, Leicester, Bristol, Clapham, Woolwich, Nottingham.

But again, what is unclear 114 years after the fact - when so many envelopes and their postmarks are missing, when evidence is cold and witnesses are dead - is whether letters really were written on a given date and where they were written from.

Other leads, such as cities the Ripper mentioned and postmarks on envelopes, were not pursued.

The absence of postmarks precludes knowing with certainty when and where a letter was actually posted, and I do not accept as fact any dates or locations on letters that do not include postmarks.

It is within the realm of possibility that the postmarks may have been different from the dates or locations - or both - that the Ripper wrote on some of his letters.

According to the postmarks, the alleged locations of the Ripper at various times, or where he claimed to be going, include Birmingham, Liv­erpool, Manchester, Leeds, Bradford, Dublin, Belfast, Limerick, Edin­burgh, Plymouth, Leicester, Bristol, Clapham, Woolwich, Nottingham.

The absence of postmarks precludes knowing with certainty when and where a letter was actually posted, and I do not accept as fact any dates or locations on letters that do not include post­marks.

A collection of covers with postmarks and cancellations showing the varying intricacies of letter communication throughout the depths of space, from star to star, could be quite interesting.

He got the distinct impression, however, that the planet, or planets, of origin must lie Libra-ward, for all the postmarks he could recognize trended in that direction.

Somewhere hidden in that vast stock of material, is a certain cover - to you, sir, an envelope with stamps and postmarks on it - for which I have been offered a quarter million dollars if I ever turn it up.

There were long rows of stamp catalogs, the set of handbooks on galactic cancellations, the massive list of postmarks, the galactic travel guides, the long row of weird language dictionaries, indispensable in alien stamp identification, and a number of technical works on philatelic subjects.

The postmarks on the envelopes, so beautifully clear-cut as to suggest they had been stolen, not manufactured by unauthorised persons, were all in the same colour.