Banks Increase Key Rate On Business Loans to 5 %; Major Banks Raise Key Rate On Loans for Business to 5.5%
major banks raise minimum rate on short-term business loans to 5 1/2%, 2d rise in prime rate in 3 mos; move initiated by Morgan Guaranty Trust; bankers link tech money mkt factors, strong demand for credit; Adm and Fed Reserve silent; graph shows rates, '57-66