 Armed with a passion, Rosenberger enrolled in Manhattan's Textile High School in order to learn all he could about linen.He coupled this with taking menial jobs in the garment industry in order to find the many uses that linen had in clothing manufacturing.He also searched the New York Public Library for information on testing for the presence of linen, but found that all current tests were either too slow or too expensive for him to employ with any hopes of encouraging others to accept his recommendations.