Estimated Construction Costs for Approach Roads to the Fort McHenry Tunnel Proposed by the Joint Venture. Plate V. Zollman Assoc., Inc. and Per Hall Assoc., Ltd., undated

Estimated Construction Costs for Approach Roads to the Fort McHenry Tunnel Proposed by the Joint Venture. Plate V. Zollman Assoc., Inc. and Per Hall Assoc., Ltd., undated, Box: 31, Folder: 17. Kermit Carlyle Parsons papers, 15-2-1428. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/102387 Accessed December 31, 2025.