Smithsonian Institution | Brookings Institution | American Philosophical Society | Scripps Institution of Oceanography | Hoover Institution | Institution of Civil Engineers | Hwa Chong Institution | Chautauqua Institution | Institution of Mechanical Engineers | Federal Correctional Institution | Royal Institution | Carnegie Institution for Science | Royal Belfast Academical Institution | Philosophical Transactions of the Royal Society | American Philosophical Association | Victoria Institution | Raffles Institution | Woods Hole Oceanographic Institution | Royal National Lifeboat Institution | Philosophical Magazine | State Correctional Institution – Pittsburgh | Smithsonian Institution Building | Philosophical Investigations | National Institution for Academic Degrees and University Evaluation | Liverpool Collegiate Institution | financial institution | Federal Correctional Institution, Dublin | Federal Correctional Institution, Bastrop | Federal Correctional Institution, Ashland | British Institution |
Hennell was associated with John Thomas Barber Beaumont in the establishment of the New Philosophical Institution, Beaumont Square, Mile End, and was one of the trustees who endeavoured to implements his plans after his death in 1841.