BTI Annual Report. Sheets#1,2,3: Exterior plots, research photos. BTI research fields off Dryden Rd- Environmental Biology research on Red Spruce and Sugar Maple trees., Sept, 15, 1988, Job #1419, Box: 25. Cornell University Media Services Photo Section records, 21-37-2227. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/166364 Accessed April 10, 2026.