Internal training programs were; "Management Contact Manual" (1944) - a formal training course on how to sell the TWI programs to management, "How to get Continuing Results from TWI Programs in a Plant" (1944) - this training program was the out-growth of two years of practical experimentation and experience on what it took to have a successful implementation of TWI.
Interne Trainingsprogramme: „Management Contact Manual“ (1944) – ein formelles Training, um TWI-Programme an Unternehmensleitungen zu verkaufen; „How to get Continuing Results from TWI Programs in a Plant“ (1944) – dieses Training war das Ergebnis zweijährigen Experimentierens und der Erfahrungen, die es benötigt, um TWI erfolgreich einzuführen und umzusetzen.