found: Business planning guide, c1985(name not given)
found: LC data base, 2/2/87(hdg.: Bangs, David H.; usage: David H. Bangs, Jr.)
found: His Business planning guide, c1988:cover (David H. Bangs, Jr.) p. iii (David H. "Andy" Bangs, Jr.) cover p. 4 (David "Andy" Bangs, entrepreneur)
found: Financial troubleshooting, c1992:CIP t.p. (David H. Bangs, Jr.) data sheet (b. 07-09-40)
found: The business planning guide, 2002:CIP t.p. (David H. Bangs, Jr.) acknowl. (Andy Bangs; Portsmouth, NH; member, Nat'l Writers Union)