Sources

Professor Bonney Pioneer Work In Geology., A Great Teacher. (Obituaries) — The Times Tuesday, Dec 11, 1923; pg. 16; Issue 43521; col E
images via http://royalsociety.org/DServe/dserve.exe?dsqIni=Dserve.ini&dsqApp=Archive&dsqCmd=Show.tcl&dsqDb=Persons&dsqPos=0&dsqSearch=(Surname=%27bonney%27) request made for permission