[6][7] Frank Walker attended Gonzaga University in Spokane, Washington for three years and earned a law degree from Notre Dame in 1909.

For a time he was the pro-bono legal advisor to the Motion Picture Theater Owners of America, a trade organization.

When Roosevelt became President in 1933, he appointed Walker executive secretary of the National Emergency Council, a New Deal agency related to the NRA.

In 1940, Walker became Postmaster General (succeeding James Farley, who had also been DNC Chairman and Roosevelt's campaign manager).

As Postmaster General, Walker continued his role as political adviser, often taking part in matters far removed from the Post Office.

In May 1945, Walker announced his retirement as Postmaster General, to allow President Harry Truman to appoint his own candidate to the office.