Both now owned by Universal Trailer Corporation, as well as others...

       History
   Formed in 2001 and headquartered in Cincinnati, Ohio, Universal Trailer Corporation announced its presence when it acquired Exiss Aluminum Trailers, Inc. of El Reno, Okla., as its first brand. In 2002 Haulmark Industries, Inc., headquartered in Bristol, Ind., joined the family of brands. Sooner Trailer Manufacturing Company of Duncan, Okla., became a part of Universal in late 2003, Miley in 2004, Featherlite of Cresco, Ia., in late 2006 and Wells Cargo of Elkhart, Ind., in 2009. Though Universal was formed in 2001, its brands have been in existence for a minimum of 15 years to more than 50 years. Today Universal has nine manufacturing plants across the United States.

 http://www.universaltrailer.com/