When John returned from the war it was with an incurable passion for flying, and within a few months he had re-entered the service of his country in the peaceful but dangerous work of carrying Uncle Sam's mails between Washington and New York in a big Martin bomber.  He found that his younger brother's love for aviation had also developed, as well as his skill in constructing and flying model airplanes.  Some of these recent ones were so novel in design and of such wonderfully ingenious workmanship, that John, who had won unusual honors as an aviator on the French front, was quite thunderstruck, and determined to encourage Paul's talents in this line in every way he could. Therefore, when the boy graduated from the Yonkers high school, and expressed a wish to take up a special course in aeronautical engineering at Clark Polytechnic Institute, John backed him up, and the mother, who would have preferred a less hazardous profession for her younger son, sighingly consented.