Most people on this board will be familiar with George Gibson, the Pirates catcher who appears in T206 and many other T and E card sets. Here is a sound film of the Pittsburgh Pirates doing drills in spring training in 1934, with Gibson, the team's manager that year, giving them a pep talk and addressing the team briefly at about 1:30. An interesting little snapshot of history with a connection to some of the sets many of us collect.
https://mirc.sc.edu/islandora/object/usc%3A9683