The archives of the Lingnan Foundation are housed at the Yale Divinity School Library. A guide to the Lingnan Foundation archives at the Yale Library can be found here. These archives include information about the history of Lingnan University and wonderfully digitized photographs of the former institution, which can be found on the Yale Divinity School website.
The Lingnan University Archives, housed at the Harvard-Benching Library and available on microfilm at the Yale Divinity Library via this guide, are described here.
Additional archives relating to the former Lingnan University can be found at Lingnan University Hong King.