INGRAM, HAROLD E. Report on the science and art of selling. Pt. no.2-12. Prepared by Sales Analysis Institute for use by the General Electric Co. under the H. E. Ingram patents & copyrights. © 14Sep, 19Sep, 27Sep, 4Oct, 11Oct, 18Oct, 25Oct, 1Nov, 8Nov, 15Nov, 22Nov34; AA164885-164895. Harold E. Ingram (A); 11Dec61; R287092-287102.