White man’s work: race and middle-class mobility into the progressive era White man’s work: race and middle-class mobility into the progressive era , by Joseph O. Jewell, Chapel Hill, The University of North Carolina Press, 2023, x+197 pp., US$29.95(paperback), ISBN 978-1-4696-7349-3, US$99.00(hardback), ISBN 978-1-4696-7348-6