The spokesman said it was unlike four previous letters known to have been mailed with anthrax.

It shows a distinctive Gnostic appeal unlike prayers in letters known to have come from Paul.

It has even been claimed that this is the earliest surviving letter known to be written by a woman in any language.

"Contents of said letter being consequently known to this babu!"

Officials declined to make the contents of the letter known, and Mr. Zimmermann did not return phone calls.

He possessed a letter, known as the Letter of Appointment.

Alex and his wife wrote letters in the Traveller cant known as Beurla-reagaird.

But the coalition that wrote the letter, known as the Arlington Group, is increasingly impatient.

City officials declined to comment yesterday, after the letter, known as a notice to cure, was made public.

This name was only later also associated with the alternative local letter now known as "San", whose original name remains unknown.