Academic research: need to find locational data for several companies

Hello, I am doing an academic research for a major business school. For one part of my research, I need to identify locations for several companies. The list contains about 2,200 firms in total, some of which are quite known and others are no longer in existence. For every company I need to find the following: 1. An exact (or approximate) address 2. A country of origin (most importantly) 3. Coordinates (latitude and longitude, which can be mapped from the address found in step 1). The format for it is Excel. This is purely a data collection exercise. Thank you for your interest.