Petrolia Library 519-882-0771 4200 Petrolia Line, Petrolia, ON, Canada https://www.lclibrary.ca Hours Map Mon-Thurs 9:00a.m.-8:00p.m. Fri-Sat 9:00 a.m.-6:00 p.m. Sun 11:00 a.m.-2:00 p.m. Get Directions
