Mr. Leif Madsen, MLS, BS Mr. Madsen joined the DSN team in June of 2009. He earned his BS degree in Communications from NU and his Master of Library Science (MLS) from SCSU. Leif has over 20 years of professional educator/librarian experience in a variety of settings from an inner-city high school on Chicago's south side to a multi-campus virtual library services developer at Westwood Colleges. Leif brings a bit of world experience to his work as he studied in London during his undergraduate time and returned to Europe to travel prior to entering his master degree studies and the work world.