Master's dissertation, 1998 Columbia University Graduate School of Architecture

Hansel nominated to World Monuments Fund Watch List of Endangered Sites, 2000 & 2002. 

In 2003, (UNESCO) added the Art Schools to its tentative list of World Heritage Sites 

Presentation at Association for Preservation Technology International Conference, 2007

Presentation at AIA-New York, Historic Building Committee, 2008

Conservation & Restoration Project, 2009

Declared Cuban National Monument, 2011