The big race was actually the entire 1938 $50,000 Hollywood Gold Cup race won by Seabiscuit.
Margaret Hamilton and "Terry" also share the screen in"The Wizard of Oz" as the Wicked Witch and Toto-respectively
"Lux Radio Theater" broadcast a 60 minute radio adaptation of the movie on
March 31, 1941 with Mickey Rooney and Wallace Beery reprising their film roles.
This film received its initial telecast in Los Angeles Wednesday 3 April 1957 on KTTV (Channel 11), followed by Chicago 4 May 1957 on WBBM (Channel 2), by Philadelphia 5 May 1957 on WFIL (Channel 6), by New Haven CT 14 May 1957 on WNHC (Channel 8), by Altoona PA 24 May 1957 on WFBG (Channel 10), and by Cincinnati 7 June 1957 on WXIX (Channel 19) (Newport KY); it first aired in New Haven CT 28 October 1957 on WNHC (Channel 8), in Seattle 6 November 1957 on KING (Channel 5), in Portland OR 19 November 1957 on KGW (Channel 8), in Spokane 21 November 1957 on KHQ (Channel 6), in Baltimore 7 December 1957 on WJZ (Channel 13), in Honolulu 15 December 1957 on KHVH (Channel 13), and in Phoenix 29 December 1957 on KPHO (Channel 5); it was first telecast in San Francisco 7 November 1958 on KGO (Channel 7); its earliest documented airing in New York City took place 9 May 1960 on WCBS (Channel 2).