1934
In 1934, Hawley Bowlus developed the first riveted aluminum trailer, named the "Road Chief". Wally Byam was involved in sales of the these trailers. Bowlus continued to produce his line of trailers, finally ending production in September 1936. William Hawley Bowlus was an aircraft designer who had worked on The Spirit of St. Louis.
Read more about this topic: Wally Byam