In 1933, the smooth and affable Kahn successfully disarmed antagonism against members of the banking community during four days of testimony before the United States Senate's Pecora Commission hearings into the Wall Street Crash of 1929. The Senate's lead counsel Ferdinand Pecora wrote on page 293 in his 1939 memoir "Wall Street Under Oath" about Otto Kahn: "No suaver, more fluent, and more diplomatic advocate could be conceived. If anyone could succeed in presenting the customs and functions of the private bankers in a favorable and prepossessing light, it was he."