This sub-subseries is comprised primarily of Kimball's correspondence with Perry, Shaw and Hepburn regarding their restoration work at Williamsburg. Most letters concern the clarification of architectural details for specific structures, although in some letters Kimball provides more general advice, such as on roofing material and heating and ventilation systems. Many letters contain enclosures, such as minutes from the annual meeting of the Advisory Committee of Architects. In addition, Kimball wrote extensively to Harold Shurtleff, head of the Research and Record Department at Perry, Shaw and Hepburn, which later became the Department of Research and Record of Colonial Williamsburg, Inc. With Shurtleff, Kimball discussed his own historical research, as well as that conducted by Shurtleff on behalf of the Williamsburg restoration. Kimball's other correspondents include Alvin Duke Chandler, the President of the College of William and Mary; W.A.R. Goodwin, Kenneth Chorley, A. E. Kendrew, A. Lawrence Kocher, and other staff members of Colonial Williamsburg, Inc.; and members of the Institute of Early American History and Culture.