Line-up of trailers at the FSA (Farm Security Administration) camp for defense workers. All trailers rent for seven dollars per week--rental fee includes electricity and water and use of laundry and all sanitary facilities. There is a fee of ten cents for twenty minutes usage of electrical washing machines. San Diego, California

In the late 1910s, there were few gas stations, few paved roads, and no highways was a time that America’s leading historians call the beginning of modern RV. In 1920s people who traveled like this were referred to as 'tin can tourists'. As time progressed, trailers became attractive, comfortable and earned a new name "house trailer" in the 1930s and 1940s. In the late 1930s, during the Great Depression, FSA (Federal Farm Security Administration) built trailer camps to assist childless couples and families of one and two children in moving in areas where new factories were​ built, and labor was in demand. In 2005, FEMA provided temporary emergency housing using thousands of travel trailers.