“…Before Wren’s White-Collar Hobo, Williams had been a forgotten figure, a quick reference (and nothing more) in industrial sociology textbooks in the 1950s. Wren (2021, personal communication, 11 August) reminisced of his work on Williams: “we went to his home and made two visits out there to where he had lived in Cleveland and met his widow and went through his archives and saw his handwriting and manuscripts that he’d done.” Wren’s (Wren et al , 2002; Wren, 1995, 2001, 2011, 2015) work on Henry Gantt and Henri Fayol, and the spread of Taylorism, also deserves special recognition. For many years, Wren was the curator of the Bass Business History Collection [4] at the University of Oklahoma’s Bizzell Memorial Library.…”