[2] In the 1960s LaSalle acquired the Mutual National Bank of Chicago founded by Frank C. Rathje.

LaSalle Bank maintained 146 retail locations and 450 ATMs throughout Chicago and its neighboring suburbs.

LaSalle Bank maintained regional offices in Atlanta, Boca Raton, Boston, Cincinnati, Cleveland, Columbus, Connecticut, Dallas, Denver, Des Moines, Houston, Indianapolis, Kansas City, Los Angeles, Miami, Milwaukee, Minneapolis, Nashville, New Jersey, New York City, Omaha, Philadelphia, Pittsburgh, San Francisco, St. Louis, Tampa, Troy, Tustin, and Washington, D.C. Subsidiaries included LaSalle National Leasing Corporation, LaSalle Business Credit, LLC, LaSalle Financial Services Inc, LaSalle ABN Capital Markets LLC, AMO Capital Markets, AMO Commercial Holdings LLC, ABN Commercial Real Estate Holdings LLC.

In 1996, ABN AMRO acquired Troy, Michigan-based Standard Federal Bancorporation, the largest savings bank in the Midwest.

In 2000, ABN AMRO acquired Michigan National Corporation of Bloomfield Hills and merged it into Standard Federal.

[4] This was a defensive move by ABN AMRO to stave off its own purchase by a consortium led by Royal Bank of Scotland.