As President Johnson’s term was ending, J. Irwin Miller wrote to Johnson to thank him for his service to the country and for allowing him (Miller) to serve Johnson. The Post Office mentioned by Miller would be designed by Kevin Roche, John Dinkeloo and Associates.

J. Irwin Miller to President Lyndon B. Johnson, 19 December 1968, 3/22, Miller House and Garden Collection, IMA Archives, Indianapolis Museum of Art, Indianapolis, Indiana. (MHG_Ia_B003_f022_025)