Stephen Spark compiled horses performance records starting in 1983 on his typewriter. Della Boy raced from 1969 (2yo) through to 1973 then raced in US from 1974 until 1975 (8yo). Had a Winning Streak of 6 wins. Career: 41 wins 21 seconds 26 thirds 151 starts.Typed document in black and red ink.harness racing, australasian harness racing, horse career, performance records, bendigo harness racing club, bhrc, della boy, j dewhirst, john dewhirst