A multiload transfluxor memory. - David G. Hammel; Walter L. Morgan; Robert D. Sidnam (IRE-AIEE-ACM Computer Conference (Western), 1959)

Ideas on asynchronous feedback networks - David G. Hammel (SWCT, 1964)

An economical electronic point-of-sale/updating system. - David G. Hammel (Commun. ACM, 1966)