Bits and pieces from the Thoroughbred industry...Saturday, July 7, is Jockeys Across America Day at Arlington International Racecourse. The first 5,000 fans entering the track will receive this year's official Arlington Jockey Colony poster. The jockey colony will holds its annual foot race from the starting gate, will give donating fans a chance at dousing them in the dunk tank, and will offer autographs starting at noon...The National Museum of Racing will hold its annual Saratoga Preview July 23rd. The program will start at 7 p.m. and will feature special guests John and Donna Ward and jockey Richard Migliore. Highlights from the track's grade I races during last year's meet will be shown in a video presentation.