East Germany | Middle East | East India Company | University of East Anglia | Dutch East Indies | East Prussia | East Africa | Lower East Side | East Sussex | East Riding of Yorkshire | Far East | East Berlin | Dutch East India Company | East Java | East Coast of the United States | East Coast Main Line | East Anglia | East End of London | East Pakistan | East | East Timor | East Frisia | Canada East | Russian Far East | University of the East | East Lothian | East Asia | Upper East Side | East Village | North East England |
Henderson was first elected to the Ontario legislature in the 1963 provincial election, defeating Liberal Party candidate Russell Watson by 874 votes in Lambton East.