Mr. Barber was the largest lender to the Guggenheim Museum's "Art of the Motorcycle" exhibition in 1998.

(He was a curator of the "Art of the Motorcycle" exhibition at the Solomon R. Guggenheim Museum.)

An early example of a bobber is the 1940 Indian Sport Scout "Bob-Job" which toured in the 1998 The Art of the Motorcycle exhibition.

No one knows exactly how many motorcycle riders will roar up to the Guggenheim Museum's doors this summer for "The Art of the Motorcycle" exhibition (opening June 26), but officials are expecting a lot.

The Deutsches Museum lent their replica to the Guggenheim Las Vegas The Art of the Motorcycle exhibition in 2001.

In the letter, Mr. Irons talks about how he first went to the Guggenheim to see its "Art of the Motorcycle" exhibition in 1998 because he is a motorcycle rider.

The Air and Space museum lent it to the Guggenheim for the 1998 The Art of the Motorcycle exhibition in New York.

The subject was also raised when BMW sponsored the Guggenheim's "Art of the Motorcycle" exhibition.

The Super Cub was included The Guggenheim's 1998 The Art of the Motorcycle exhibition.

The boutique trend may have been encouraged by the "American Chopper" series on the Discovery Channel and by the Guggenheim Museum's highly attended "Art of the Motorcycle" exhibition in 1998.