It was a torn sheet of copybook paper the kind that his agency distributed to schools around Iraq, with date and subject lines printed in English and Arabic.

NEWYORKER: Betrayed

The best explanation comes from one of the field's top private collectors, New York investment manager Richard Gilder, who, together with friend and collecting partner Lewis Lehrman, owns some 50, 000 manuscripts and printed material that date from colonial times to the present.

FORBES: It's Bunk?

Vintage prints produced around the same date as the negative they are printed from are more valuable than later copies.

ECONOMIST: Snapping up the past

He earlier launched a mail-order business using printed catalogs, but that proved very expensive and the catalogs went out of date too quickly.

CNN: BARGAIN CLICK