Mr. Fast said that his dealer's invitation to Frieze sent him seeking a worthy topic; pornography won out.
The agent also corrected testimony in which he said that Dr. Lee sent letters seeking an overseas job.
The audits, which began last year, reached back to 1997, and the company sent letters seeking repayment this summer.
The New York attorney general, Eric T. Schneiderman, has sent letters seeking information to about 20 employers, including McDonald's, Walgreen and Wal-Mart, say people briefed on the matter.
While prisoners have always sent letters seeking supporters, the Internet has vastly increased the potential to reach large audiences far from their cells.
This week, a Republican senator, Charles E. Grassley of Iowa, sent letters seeking more information about Dr. Kuklo from Walter Reed, Washington University, two medical journals and Medtronic.
World Book Publishing, a 75-year-old publisher based in Beirut, Lebanon, sent letters seeking to sell the English rights to a book of Mr. bin Laden's statements to the Al Jazeera TV network from 1998 and 2001.
Mr. Welling said the company's lawyers had sent letters seeking to license this technology to all the major carriers and to the third parties that provide fraud-detection services.
However, just a few weeks ago, a sequence of unrelated events sent me seeking out those thin collections gathering dust on the bottom shelves of my bookcases, cracking their meagre spines to see what I'd been missing.
