A series of class visual histories can be found at:

https://www.youtube.com/user/olddowling/playlists

(1) Copy the above link into a new window or tab.

(2) Select a period or year and mouse over the thumbnail.

(3) Click on the "Play All" tab.

The playlist "Spirit of Old Dowling"  is a quick sprint through all 54 years - runtime 1 hour 35 min more or less.

The playlist "Golden Age" is a separate "highlight reel" for each class; runtime vary.