design were resurrected in the 1970s with a new wave of interest in solar thermal energy. His large home and laboratories still stand in the Tacony section of Philadelphia, as an apartment house and garages. They were added to the historic register in October 2019, meaning they cannot be demolished or significantly altered without the Historical Commission's permission. Patents a with Arno Shuman b with Constantine Shuman c with Charles Vernon Boys Source: Shuman Rediscovered: Hemauer and Keller At the 11th International Cairo Biennial of Contemporary Art in 2008-09, the Swiss artists couple Christina Hemauer and Roman Keller drew attention to Shuman's Sun Project. Their contribution entitled "No1 Sun Engine" consisted of two parts: apart from a reconstruction of two segments of the solar engines, they built a stand providing information on Shuman's project and on solar energy in general. On the wall behind the information stand, there was a quote (in both English and Arabic) by Shuman: “One thing I feel sure of, and that is that the human race must finally utilize direct sun power or revert to barbarism.” Frank Shuman, 1914 References Further reading This book describes Shuman's solar project in Egypt. This book describes Shuman's work in solar power in both the US and Egypt. Includes photos. 19th-century American inventors 20th-century American inventors 1862 births 1918 deaths People associated with solar power