This video is from Game 4 of the 1979 International Women’s Professional Softball (IWPS) World Series and contains the first 4 innings. The slingshot vs the windmill pitching.
https://youtu.be/8cvvSRqfJXc <iframe width="560" height="315" src="https://www.youtube.com/embed/8cvvSRqfJXc" frameborder="0" allowfullscreen></iframe>
https://youtu.be/8cvvSRqfJXc <iframe width="560" height="315" src="https://www.youtube.com/embed/8cvvSRqfJXc" frameborder="0" allowfullscreen></iframe>