Some examples of early airplanes are seen below.
The image below illustrate some of the early airplane designs of the Wright Brothers. These images date to the 1910s. Note the two sets of wings running parallel to one another and secured by long, vertical rods. The bodies of the planes are small in comparison to the wings.
The image below illustrates typical 1920s U.S. Mail delivery plane. The span of the wings has decreased from the Wright Brothers' early planes.
Below are several examples of typical 1930s planes, from the era considered the Golden Age of Flight. This first set of images illustrate several private airplanes. The sets of parallel wings are often still present, but the overall form has become more streamlined.
This next set of 1930s images illustrate commercial airplanes of the Central Vermont Airways. These commercial airlines, which are displayed in chronological order, become larger and more closely resembling the commercial airplanes of today.
The following images illustrate Air National Guard planes of the 1940s and 1950s. The examples are not from Vermont but are probably similar to the Vermont Air National Guard planes of the 1940s and 1950s. These planes much more streamlined and aerodynamic.