A view of Building 69, south facade, looking northeast - Photo from April 1985 by William G. MacRostie

Photo from the United States Department of the Interior archives

A view of the Bridge between Buildings 63 and 69, with Building 63 at right and Building 69 at left, looking west - Photo from April 1985 by William G. MacRostie

Photo from the United States Department of the Interior archives

Parke, Davis & Company Research Laboratories Building 55 (right) and Building 69 (left) - https://digitalcollections.detroitpubliclibrary.org/bh022649

Photo from the Burton Historical Collection, Detroit Public Library

A view of the Parke-Davis Building 69, east elevation, with Buildings 62 and 63 at right, looking northwest - Photo from April 1985 by William G. MacRostie

Photo from the United States Department of the Interior archives