INGRAM, HAROLD E. Lectures on the science and art of successful selling. No.1-2, 3-4, 5-6, 7, 8-9, 10. 16th ed. © 15Sep36, AA215926; 1Oct36, AA216940; 10Oct36, AA217792; 1Oct36, AA218632; 15Oct36, AA219999, 222521. Harold E, Ingram (A); 6Nov63; R325871, 325873-325874, 325881, 325883-325884.