1. Topographical and underground plan of the Cliff Mine : situated on Keweenaw Point in the S.W. quarter of Sec. 36. Town. 58.N.R.32.W. Yale Public content 1849. 2013-11-22T15:45:27Z. 2013-11-22T15:45:27Z. Ackerman. English. Public. Michigan and Cliff Mine (Mich.).