if you like 100 year old car company newsletters, here's the Hudson and Essex weekly 5 sheet, the Hudson Triangle. It's focused on the factory race team, and lots of blather about how to sell cars.

 

 https://books.google.com/books?id=Q0fiAAAAMAAJ&pg=RA2-PT65&lpg=RA2-PT65&dq=essex+4+cars+race&source=bl&ots=WytDq1jXpx&sig=ACfU3U17XQwlgNKAsdx8oTKdg1Ni_I0f0Q&hl=en&ppis=_c&sa=X&ved=2ahUKEwjXjtjSoq_mAhVOb60KHZSfA8oQ6AEwGXoECAkQAg#v=onepage&q&f=false