Who ever said you or your sources were wrong? You are looking at it from a very different perspective and for some reason viewing other points of view as criticism of yours. For example, you gave "one WWII veteran's account of several in my possession". However, a single Light Tank Company by T/O&E had 70 M3. A Medium Tank Company 92. The Battalion HQ&HQ Company 47 more. Service Company 44 more. So 437 in just a single Tank Battalion. It was as ubiquitous as the M1 Carbine and the M1911 Pistol and worked well enough that it was retained in inventory for nearly 50 years. That is no criticism of you, your Dad, or Mr. Martin.