Complex sentence: On June 7,1972, the collection was donated by Thomas A. Urbine, Jr. on behalf of Catharine Leeke to the Historical Society of Pennsylvania and then transferred to the College of Physicians.
Split into simpler sentences: On June 7,1972, the collection was donated by Thomas A. Urbine, Jr. on behalf of Catharine Leeke to the Historical Society of Pennsylvania. After that, the collection was then transferred to the College of Physicians.