You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Enniskilllen Township, Bridgeview Conservation Area, Petrolia. Near oil well "Discovery" site exhibit. Remove constraint Place: Enniskilllen Township, Bridgeview Conservation Area, Petrolia. Near oil well "Discovery" site exhibit. Place Lambton Remove constraint Place: Lambton Place Ontario Remove constraint Place: Ontario Topic Euphorbia Remove constraint Topic: Euphorbia