Reference | {Deposit:: 100 LARGEST QUARRIES, ROCK PRODUCTS, 1968, P. 70-71.}{Deposit:: SMITH, R.A., 1915, LIMESTONES OF MICHIGAN; PUBLICATION 21, GEOLOGICAL SERIES 17, PP. 151-152, 206,234, 240-241, 260-261, 286-87}{Deposit:: PORT INLAND HISTORY, 2001, http://www.mlo.net/index.html, P. 1-2.} |