Here’s various ads for Studebaker cars from the 1920s, the Pierce-Arrow French Brougham, Rauch & Lang worm drive, and Reo 5th and 6th cars and sedans (from 1913).
I can see why the Studebaker is such a classic. The luxurious illustrated advertisement style is distinct. Well bred dogs to go with a well bred car. Stylish women. These early 1920s Studebaker ads are all about luxury.

Here are 9 Packard car advertisements from the 1920s, including one for “Your 1925 Packard”. Several of these ads contain the slogan, “Ask the Man Who Owns One”.

Here are 4 illustrated ads for a 1920s Nash roadster, an early 1920s Overland Car, and 2 pages of ads for Maxwell Motors.

Here are some old Lincoln car ads from the 1920s and before. They include illustrated ads for the Berline Landaulet, the Cabriolet, and the 4 passenger Coupe. My favorite illustration is of a family watching a biplane in the sky, leaned against their Lincoln vehicle.

Here are some scans that I made to digitize an old guy’s scrapbook. These are lovely illustrations that capture the energy of the late 1920s. I found the wikipedia article on the history Lasalle fascinating, and a little tragic: