U.S. Bancorp, Portland, Ore., said it will...

U.S. Bancorp, Portland, Ore., said it will buy Seattle-based Peoples Bancorp. in a stock swap valued at $288 million . . . The Federal Home Loan Bank Board said depositors withdrew $4.7 billion from savings and loan institutions in March, but quarterly interest payments credited to accounts kept the industry from recording a net decline . . . International Business Machines upgraded its mainframe computers by filling in gaps between its powerful 3090 series and its smaller, cheaper 4300 series of machines.