ABM Janitorial Services is part of ABM Industries Incorporated, one of the largest facility services contractors listed on the New York Stock Exchange. With fiscal 2006 revenues in excess of $2.7 billion and more than 75,000 employees, ABM provides janitorial, parking, engineering, security, lighting and mechanical services for thousands of commercial, industrial, institutional, and retail facilities in hundreds of cities across the United States and British Columbia, Canada. The ABM Family of Services includes ABM Janitorial; Ampco System Parking; ABM Security Services; ABM Facility Services; ABM Engineering; and Amtech Lighting. Founded in 1909 as a one-man window washing business, ABM has grown to become a leader in outsourced facility maintenance and operations services in the United States. ABM Janitorial Services has a location in Tulsa, Okla.