Helen Murray Free, chemist who revolutionized diabetes testing, dies at 98 Emily Langer © J. Scott Applewhite/AP Helen Murray Free receives the National Medal of Technology and Innovation from President Barack Obama. When Helen Murray Free entered college in 1941, young women enjoyed few professional opportunities upon their graduation. For the most part, she said, they could hope to become “secretaries, nurses or teachers.” In keeping with the limitations of her time, Mrs. Free had enrolled at the College of Wooster in Ohio planning to become an English and Latin tea...