During this time, and into the early 1950s, J. Dennis Kemp became concerned about the lack of library resources in unincorporated areas of Cobb County, and went to the county commissioner to see if library outreach could be afforded to these communities.

Prior to this acquisition the Fort Hill branch was, for many decades, the only library black people could utilize.

In the late 1950s the Clarke Library moved to a larger building, the old U.S. Post Office, and had two bookmobiles serving the more rural regions.

[10] Due to this bond, from 1966 to 1969 seven new libraries were added: Kennesaw, East Marietta, Acworth, South Cobb, Sibley, Lewis A. Ray, and Powder Springs.

In 2007 a new building was secured in Powder Springs, and their town library moved to its new location on Atlanta Road.

Citing a 50% loss of circulation, the Wilson Library was unanimously voted to shut down in 2013.

[16] Another renovation was approved in 2016 when the East Marietta Library was chosen for a new location and new building.

This new facility, the Sewell Mill Library and Cultural Center, opened on December 4, 2017 at a cost of $10.6 million.

[19] It was built in conjunction with the Cobb County Parks Department, and, in addition to a large collection of books, also has a black box theater, open-air amphitheater, art galleries and classrooms, and many individual and group conference rooms.