The Geology of Erie and Crawford Counties. Discovery of the Preglacial outlet of lake erie. This book, "The Geology of Erie and Crawford Counties Discovery of the Preglacial outlet of lake erie", by Israel Charles White, J. W. Spencer, is a replication of a book originally published before 1881. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible.