INGRAM, HAROLD E. Report on the science and art of selling. Report no.4-12. Prepared by the Sales Analysis Institute under the H. E. Ingram patents & copyrights. © 25Sep, 27Sep, 9Oct, 16Oct, 23Oct, 30Oct, 5Nov, 13Nov, 20Nov34; AA164899-164907. Harold E. Ingram (A); 11Dec61; R287103-287111.