Great photo! As sagefinds mentioned - it's a Packard. I'd say it's a 1907 Model 30 like this one:
It could also be a 1908-it will take a Packard expert to tell us which.
I believe it is a heavily modified Buick. The hubcaps, springs, transmission, shifter and brake, pedals, hood , and radiator all line up.
The headlights are not a matched pair.
1912 Buick Model 43 had the oval radiator filler.
I believe it is a 1903-04 Cadillac Model A chassis that was updated with the 1905 Cadillac hood and dash. All of the visible chassis details are Model A - steering, front springs (with the 'flattened' ends, rear axle radius rods, wheel hubs, etc. The rear entrance body also has all characteristics of the Model A. The hood and cowl are 1905 Cadillac. If these modifications were made, it would also explain the apparently new and shiny paint job.
It's interesting that the Model T on the right has a painted radiator. It's not a brass radiator. It's a 1917-1919. The license plate appears to be a 1919 Ohio.
The car on the left is a Studebaker.
Amazing photos!
Sure looks like a Panhard-Levassor to me. I think I can see their signature spark and throttle knobs (handles) inside the steering wheel.
I knew Jimmy Staats pretty well. He was probably best known for his Curved Dash Oldsmobiles. He showed his 1903 at Hershey every year for decades; toured with it regularly as well. What would you like to know?