To obtain maize and/or wild Zea and some Tripsacum germplasm, contact:
North Central Regional Plant Introduction Station (NC7)
USDA/ARS & Iowa State University
State and Mortensen Rd.
Ames, IA 50011
NCRPIS maintains a maize germplasm collection of world-wide scope, but emphasizes accessions from North, Central and South America. They also maintain many accessions of wild Zea (i.e., teosinte) and some Tripsacum.