there is a website dedicated to speedsters, of all brands, by someone that wrote a book about the speedster style.

the site includes a lot of brands, like Oldsmobile, Mercer, Stutz, Knox, Stanly, National, etc etc

the site is a side effect of the book the author wrote, and Hagerty did a book review on it https://www.hagerty.com/media/automotive-history/the-definitive-book-on-classic-speedsters-requires-a-slow-roll

 

https://www.classicspeedsters.com/blog