Birkinbine, J. (1887). Report of John Birkinbine, C.E., on location of iron and steel works, at Duluth, Minn. [Duluth, MN]: Printed by West Duluth Land Co..

Birkinbine, John. Report of John Birkinbine, C.E., On Location of Iron and Steel Works, At Duluth, Minn. [Duluth, MN]: Printed by West Duluth Land Co., 1887.

Birkinbine, John. Report of John Birkinbine, C.E., On Location of Iron and Steel Works, At Duluth, Minn. [Duluth, MN]: Printed by West Duluth Land Co., 1887.