Plan for terminal buildings of highway tunnel. Sketch of entryway labeled: "Detroit River Memorial Tunnel." Other labels include: "Land elevation of the terminal building, plan and sections. William A. Adams, consulting engineer, Detroit"; "Proposed plan for a Detroit River highway tunnel connecting the cities of Detroit and Windsor"; and "Frederick J. Kolb, July 1918." Photograph of plan pinned to corkboard. Recorded in glass negative ledger: "D/Tunnels & tunneling." Emulsion flaking on edges.
