Museum History The Marietta/Cobb Museum of Art occupies a renovated historic Classical Revival building that opened as the Cobb County United States Post Office on March 14 1910. The Main Branch of the Cobb County/Marietta Public Library moved into the Post Office in October 1963. In the early 1950s, a committee of the Marietta Womens Club evolved into the Fine Arts Club of Marietta. In the 1970s, the Fine Arts Club acquired use of the Clarke Library building on Church Street, donated by the Marietta City Council. In 1983, the Fine Arts Club changed its name to the Marietta/Cobb Fine Arts Center. Then, in 1986 the Marietta was approved as a non-profit organization and the development of a museum was well underway. In 1989, the Main Branch of the Cobb County/Marietta Public Library vacated the Post Office building on Atlanta Street, moving into a newly erected building on Roswell Street. During this same time in September, the Marietta/Cobb Fine Arts Center changed its name to the Marietta/Cobb Museum of Art. On April 5, 1990 the Marietta/Cobb Museum of Art officially took over the original Post Office building chosen by the Cobb County Commission.