1st Source Corporation, with headquarters in South Bend, Ind., is the holding company for 1st Source Bank, a full-service commercial bank with more than 64 branches in 15 counties in northern Indiana and southwestern Michigan. Established in 1863, 1st Source Bank offers a variety of financial products and services, including traditional deposit services, loans, and investment and trust services.1st Source Bank also competes for business nationally by offering specialized financing services for new and used private and cargo aircraft, automobiles for leasing and rental agencies, medium and heavy duty trucks, construction and environmental equipment. Its wholly-owned mortgage banking subsidiary, Trustcorp Mortgage Company, has five offices in Indiana and Ohio.