The Japanese Gyroball Mystery - The New York Times

February 22

See the mysterious object baffling onlookers and officials in Japan

Not Much to Matsuzaka's Mystery Pitch - The New York Times

Greatest Pitches in Baseball Of All Time – Legends Clothing Co.

An Analysis of the Gyroball – Society for American Baseball Research

THE JAPANESE IN NEW-YORK.; Effect of the Grand Ball- More Visits to the Stores--Excursions To-day--The Approaching Departure. - The New York Times

E-Ticket: Chasing the Demon Sphere

Not a dicey deal - Deseret News

E-Ticket: Chasing the Demon Sphere

Mysterious ball appears on Japanese beach - CBS News