The Frontenac Motor Company was established in late 1915 for the sole purpose of engineering, building, and racing high performance automobiles.  Following the team’s victory at the 1921 Indy 500, a group of investors affiliated with the Stutz Company approached Louis Chevrolet with the idea of producing a touring car under the Frontenac name.  A new Frontenac Corporation was set up in the State of Delaware, and Louis started building a prototype passenger car.  Less than a year later Allan A. Ryan, (the mogul behind the Stutz investment group), was embroiled in a huge Wall Street scandal.  The Delaware Corporation collapsed, and Louis was stuck with all the developmental costs of the prototype car.  Louis had no choice but to seek bankruptcy protection, and the original Frontenac Motor Company folded.

Shortly thereafter, a group of Chicago business men formed yet another Frontenac company, and Louis Chevrolet was involved in designing a 2nd prototype car.  This time the Frontenac featured the Argyll single sleeve valve engine, (the same power plant which was later used in the da Vinci project).  The new company was not able to sufficiently raise capital, and never got past the prototype stage.  The Frontenac name then faded into obscurity.  The following documents pertain to both the racing enterprise, and passenger car businesses.