Charles Ives Barber was an American architect, active primarily in Knoxville, Tennessee, and vicinity, during the first half of the 20th century. He was cofounder of the firm, Barber & McMurry, through which he designed or codesigned buildings such as the Church Street Methodist Episcopal Church, South, the General Building, and the Knoxville YMCA, as well as several campus buildings for the University of Tennessee and numerous elaborate houses in West Knoxville. Several buildings designed by Barber have been listed on the National Register of Historic Places.

Paul Philippe Cret was a French-born Philadelphian architect and industrial designer. For more than thirty years, he taught at a design studio in the Department of Architecture at the University of Pennsylvania.