Also in  1918 Chevrolet brought out it's model 490 Light Delivery chassis cowl. The chassis cowl consists of the painted metal parts. The wooden cab and pickup type body were purchased from an aftermarket manufacturer.
The 1921 Chevrolet 490 Roadster Pickup's cargo box was also an aftermarket item.
This practice of using an aftermarket continued fir the 1927 and 1928 models.

The first Ford pickups to hit the streets was in the mid 1920s. Back then they came in one color, one model, and without much equipment.
On April 25, 1925 the Ford Motor Company introduced their first factory produced pickup truck. The Ford model T Runabout with Pickup Body was successful with over 33,800 of them being sold. 
The Closed Cab version of the pickup was introduced in 1928. This truck featured an all steel cab with roll up windows in its doors.
The Open Cab Model A Pickup was dressed up by using a car type nickel plated grille surround and headlights in 1928 and 29. The red wheels and while wall tires also add a nice touch.
It seemed the writing was on the wall back then. From the early beginning the pickup truck was strictly a work vehicle.
Things stayed this way until the mid to late 1950's when most of the manufactures started to add car like features. 
This practice changed the automobile industry forever.
The pickup truck was never the same work horse again.
Even with their high gas consumption they continue to be some of the best selling vehicles of all North American manufactures.
 

These pictures came for a number of sources including 
web pages of the manufacture, news groups and my own.
Since most of these pictures came from news groups there may 
be a chance that your car is shown here.

I would like to invite any one that has a favorite Pickup Truck of 
this period to E mail me a copy.