Weil eventually sought a national charter led to a series of agricultural crises.
In 1945, Byron Dunn, a bank employee since he was 17 years old in 1905, replaced Weil after his death.
Under Dunn, National Bank of Commerce became "a full-service financial services facility".
Dunn also became involved in the community, helped to start an employee newspaper, and built a lodge in South Bend.
In 1964, National Bank of Commerce significantly increased deposits by offering one of the highest savings interest rates in the country.
James Stuart Jr., who came to National Bank of Commerce from Citibank, became president in the 1980s and began an affiliate system.
To complete the deal, First Commerce had to sell City National to Heritage Bank of Aurora because Wells Fargo would have had two-thirds of the market in Hastings, more than allowed by federal law.
National Bank of Commerce sold a Lincoln branch to Pinnacle Bancorp.
The deal gave Wells Fargo over $4 billion in assets in Nebraska, more than twice what the bank had before.