Edward L. Tilton and Alford M. Githens were the lead architects for McGregor Library in HP. Detroit architects Marcus R. Burrowes and Frank Eurich, Jr. collaborated. A copy of the original dedication ceremonies can be viewed here,
http://www.Detroit1701.org/McGregorDedication.pdf This copy of the dedication ceremonies resides in the Library of Congress. Eurich designed many of the HP school buildings.