. . . . . . . . . . . . "Letter of J.P. Kennedy to his constituents, citizens of the Fourth Congressional District in the State of Maryland, on the principles and value of the protective system" . "Letter of J.P. Kennedy to his constituents, citizens of the fourth congressional district in the State of Maryland on the principles and value of the protective system"@en . "Letter of J.P. Kennedy to his constituents, citizens of the fourth congressional district in the State of Maryland on the principles and value of the protective system" . . . . . .