"Give us a clue," said a voice.
"Very well. I'm in a foolscap envelope."
Then the guessing began.
One said a writ.
Another said an income-tax demand.
But no one could guess it.
"I'm a poem for a paper," said the foolscap letter at last.
"Are you good?" asked a voice.
"Not good enough, I'm afraid," said the poem. "In fact I've been out and back again seven times already."
"A war poem, I suppose?"