Blue Gap Post Office was named for a gap in Table Mountain and was established on February 14, 1878. The one-room structure had hand-hewn cedar rafters, a cedar shingle roof, and walls of roughly hewn oak logs, and it also served as a stop on the Round Rock to Buffalo Gap stage route. Postmasters at Blue Gap were James K. Paul on February 14, 1878, B.F. Sullivan on September 16, 1878, J.J. Craig on April 15, 1879, James K. Paulk on June 2, 1879, and A.A. Hanscomb on January 26, 1880, before the post office was discontinued in March 1881. In 1882 the post office was transferred to the town of Content two miles north. Originally located 16 miles east of Winters, the building was recorded as a Texas Historic Landmark in 1966, donated to the Z.I. Hale Museum in 2000, and reconstructed in Winters in 2013 by a crew headed by Fred Watkins, Roger Stephenson, Charles Brewer, and Mike Kozelsky.