[5] She had two immediate siblings, Lillian and Hiram Jr.[7] Her father was a successful farmer and briefly represented Douglas County in the Georgia General Assembly.

[8] She also took night classes in journalism from Georgia School of Technology professors and correspondence courses in English, history and art from Emory University.

[14] On January 1, 1921, she resumed her career at the newly created[15] Georgia Department of Archives and History as a secretary[5] under Lucian Lamar Knight.

[17] Knight arranged for Blair to spend a week at the state archive in Boston in June 1922 to study their methods.

[17] In 1924, as his six-year term was ending, Knight declined re-election by the Georgia Historical Commission due to ill health.

She was one of just a few women, including Marie Bankhead Owen and Margaret Cross Norton, who had achieved such a position in the U.S. up to that date.

[18] The Atlanta Constitution hailed her appointment as an honor paid to the women of Georgia and harbinger of "the woman's age".

Through personal connections she secured the donation[24] of the former Amos G. Rhodes home on Peachtree Street to the state for this purpose.

[27] In May 1933, Blair was the only woman on a 21-member committee created by Joseph Henry Beale to organize the American Legal History Society.

[5][28] In 1935, alongside ten other noted women, including Martha McChesney Berry, Annie Jump Cannon, Caroline Pafford Miller, and Florence Sabin,[29] she was given an honorary Master of Public Service by Oglethorpe University.

[30] Blair left her job as State Historian at the end of 1936, after two six-year terms,[6] and was succeeded by Louise Frederick Hays.

[35] Fund-raising drives were held,[34] and plans were made for the organization to obtain a permanent building in place of offices they had rented previously.

[36] Blair set about curating a large collection of records and artifacts[35] that would later be displayed at the Atlanta History Center.

I think the Chamber of Commerce, the Convention and Tourist Bureau and other such organizations would render a great service if they would put more emphasis on the importance of Atlantans knowing more about their city.In 1942, she helped plan a celebration of the 100th anniversary of Marthasville (Atlanta's original name), including designing a commemorative set of coffee cups for the occasion.