Philadelphia Park has launched a Pennsylvania Derby web-site. The site lists past winners of the race, has current news updates, and will webcast the race live. Post time for the Pennsylvania Derby (gr. III) is 5:05 (EDT) on Monday. (More, PaDerby)...The Barretts October Yearling Sale catalog is currently available on-line. 462 yearlings are available at the sale which begins Oct. 9th at the Hinds Pavilion at Fairplex Park in Pomona, Cal., and concludes the following day. (More, Barretts)...Author John McEvoy will sign copies of his book, "Great Horse Racing Mysteries-True Tales From The Track," at Arlington International Racecourse on Monday, from 1:30- 3:30 p.m. (CDT). The book published by the Eclipse Press division of The Blood-Horse Inc. explores several infamous "unsolved mysteries" of the racing world… Almost 100 items, including shoes worn by Belmont winners Caveat, Commendable, and Conquistador Cielo and artwork by Richard Stone Reeves and Anthony Alonso, will be auctioned at Belmont Park Sept. 16 to benefit the Thoroughbred Retirement Foundation. Other memorabilia items in the catalog are saddle towels donated by Shug McGaughey, Shoemaker and Pincay items, programs from races of Ruffian and Go For Wand, posters (most autographed), trophies, and many collectable photographs. Estates represented are those of Alfred Gwynne Vanderbilt, Sonny Werblin, Woody Stephens, Angel Penna, and Buddy Hirsch. The sale will be at 10:00 a.m. (EDT) at trackside in the Belmont Clubhouse and will be followed by a tag sale on the second floor of the clubhouse. Mail Bids will be accepted until midnight, Sept. 13, at Thoroughbred Retirement Foundation, P.O. Box 153, Albertson, NY 11507.