0000914121-06-003769 Sample Contracts

and
Servicing Agreement • December 13th, 2006 • Wells Fargo Mortgage Backed Securities 2006-20 Trust • Asset-backed securities • New York
Exhibit 1.1 WELLS FARGO ASSET SECURITIES CORPORATION Mortgage Pass-Through Certificates (Issuable in Series) UNDERWRITING AGREEMENT
Underwriting Agreement • December 13th, 2006 • Wells Fargo Mortgage Backed Securities 2006-20 Trust • Asset-backed securities • New York