Excerpt from Iowa Geological Survey, Vol. 17: Annual Report, 1906 With Accompanying Papers Map showing progress of detailed mapping, to face Geological map of Iowa showing quarries, etc to face Production of stone in Iowa from 1896 to 1906 Production of gypsum and lime in Iowa from 1896 to 1906 Production Of lime and gypsum in the United States from 1896 to. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.