United States v. Diaz (1989)
In United States v. Diaz, 878 F.2d 608, 619-20 (2d Cir.), cert. denied, 493 U.S. 993, 110 S.Ct. 543, 107 L.Ed.2d 540 (1989), an expert testified that ledgers found in defendants' house recorded drug transactions.
The court held that this testimony, coupled with the seizure of cocaine from parties other than defendants, could provide the basis for the jury's determination that defendants were involved in a cocaine conspiracy. Diaz, 878 F.2d at 619-20.