In a breach of contract and fraud action, trial court's exclusion of plaintiff's documentary evidence and judgment in favor of defendant is reversed where: 1) altered poultry condemnation certificates were authenticated and were not hearsay as they were introduced as the operative documents establishing the fraud perpetrated on plaintiff; 2) the unaltered certificates obtained from the USDA were properly authenticated and admissible as official records; 3) the purchase orders were properly authenticated and admissible as business records; 4) calculation sheets were admissible as admissions by a party opponent; and 5) weight slips were admissible as adoptive admissions.