production statistics

Do you know who might have been body supplies for Auburn during the years 1919-24?

thanks

keith

For a research project on the development and production history of the convertible sedan, are there any available annual data on the number of these bodies produced for Auburn, 1928-1936, and Cord, 1929-30? One source claims that half of Auburn's production in the late twenties were this style. Can this possibly be true? Thanks for any leads.