When were campers made?

Campers, or travel trailers, began appearing in the early 20th century, with the first known camper built in 1910 by a man named Edward D. F. Smith. The design evolved through the 1920s and 1930s, gaining popularity as automobile travel became more common. By the mid-20th century, campers had become widely manufactured and were a popular choice for family vacations and outdoor adventures.