Here is a closeup of the Warner headlamp lens introduced in 1912. Production stopped sometime in the late teens. There is an ad for the lenses here: http://the-master-craftsman.blogspot.com/2010/12/patented-in-1912-two-wa...

Ford supplied the bare chassis, the dealer or the buyer supplied the body.

Carpentry and axle grease...Rapture!

Yes, those are glass lenses on the Packard. Possibly from the Warner Lens Co. Here is a similar set on a Stutz.

The Ford is equipped with non-skid tires. If you don't believe me, you can read it for yourself: The words "NON-SKID" make up the siping (tread pattern).

Seems they took advantage of a relatively new product, the plywood industry was born around 1905-7 in Oregon although the Egyptians and Chinese had forms of it 3500 years back.

Could these vehicles be destroyed by termites? (No offense to tterrace).

This woody must have been for lightweight goods transport - eggs, bread, etc., since the weight of all that wood is a major load all by itself. Love the trim over the side window.

I really like these old-fashioned cars and trucks. Hard to ride on, difficult to drive, but sturdy and resistent. Those wooden bodies lend them a certain look and feel I find really attractive. And they were very recyclable - once you wrecked the truck, you could use the remains of the body in the chimney.

It's possible that those are protective lamp covers. Lots more rocks in the road and hard to find parts (no standardization of lamps yet, so probably needed to order to replace) created such a need.

Of course, in many jurisdictions these days, covers over headlights aren't legal, although you still see them, but in some sort of plastic.

More universally required these days are fenders and/or mudflaps, neither of which is on the Model T truck's rear wheels.

L to R:Apperson Jackrabbit(note animal on radfiator core),Ford model TT (ton truck), Packard, unknown dump truck

Check out the car right behind the Model T. What kind of headlights are those? Looks like a modern LED lens. Could this be some kind of gas fired light?

[You're seeing the pattern of the headlight lens. - tterrace]