At 5:05 of the second (long) track, Ray runs down the card in the 9th that evening at Wonderland Revere. The
Boston Globe shows it matches the 9th race on July 15, 1949, so that is
the date of that show (minus Bob, with Leo Egan).
The next show on the file at the 12:00 gives a ball score of Tigers 8,
Red Sox 7 from the day before. That puts this show at July 16, 1949.
Detroit scored 4 in the 9th to win at Fenway on the 15th.